154491790860 has 720 divisors, whose sum is σ = 558676863360. Its totient is φ = 35674214400.

The previous prime is 154491790847. The next prime is 154491790877. The reversal of 154491790860 is 68097194451.

154491790860 is a `hidden beast` number, since 1 + 5 + 4 + 491 + 7 + 90 + 8 + 60 = 666.

154491790860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 154491790797 and 154491790806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 377730336 + ... + 377730744.

It is an arithmetic number, because the mean of its divisors is an integer number (775940088).

Almost surely, 2^154491790860 is an apocalyptic number.

154491790860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154491790860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279338431680).

154491790860 is an abundant number, since it is smaller than the sum of its proper divisors (404185072500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

154491790860 is a wasteful number, since it uses less digits than its factorization.

154491790860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 154491790860 in words is "one hundred fifty-four billion, four hundred ninety-one million, seven hundred ninety thousand, eight hundred sixty".