154257478920 has 448 divisors, whose sum is σ = 549848952000. Its totient is φ = 38822644224.

The previous prime is 154257478897. The next prime is 154257478997. The reversal of 154257478920 is 29874752451.

154257478920 is a `hidden beast` number, since 1 + 5 + 42 + 574 + 7 + 8 + 9 + 20 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 282006087 + ... + 282006633.

Almost surely, 2^154257478920 is an apocalyptic number.

154257478920 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 154257478920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274924476000).

154257478920 is an abundant number, since it is smaller than the sum of its proper divisors (395591473080).

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

154257478920 is a wasteful number, since it uses less digits than its factorization.

154257478920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104 (or 1085 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 154257478920 in words is "one hundred fifty-four billion, two hundred fifty-seven million, four hundred seventy-eight thousand, nine hundred twenty".