154080511668 has 72 divisors (see below), whose sum is σ = 403283298600. Its totient is φ = 49543393536.

The previous prime is 154080511667. The next prime is 154080511727. The reversal of 154080511668 is 866115080451.

154080511668 is a `hidden beast` number, since 1 + 54 + 0 + 80 + 511 + 6 + 6 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 36034669584 + 118045842084 = 189828^2 + 343578^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154080511667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1073578 + ... + 1208606.

It is an arithmetic number, because the mean of its divisors is an integer number (5601156925).

Almost surely, 2^154080511668 is an apocalyptic number.

154080511668 is a gapful number since it is divisible by the number (18) 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 154080511668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201641649300).

154080511668 is an abundant number, since it is smaller than the sum of its proper divisors (249202786932).

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

154080511668 is a wasteful number, since it uses less digits than its factorization.

154080511668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136161 (or 136156 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The spelling of 154080511668 in words is "one hundred fifty-four billion, eighty million, five hundred eleven thousand, six hundred sixty-eight".