155857300038 has 112 divisors (see below), whose sum is σ = 382630654656. Its totient is φ = 47199017520.

The previous prime is 155857300031. The next prime is 155857300043. The reversal of 155857300038 is 830003758551.

155857300038 is a `hidden beast` number, since 1 + 5 + 585 + 7 + 30 + 0 + 0 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 155857299966 and 155857300002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155857300031) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 44952781 + ... + 44956247.

Almost surely, 2^155857300038 is an apocalyptic number.

155857300038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155857300038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191315327328).

155857300038 is an abundant number, since it is smaller than the sum of its proper divisors (226773354618).

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

155857300038 is a wasteful number, since it uses less digits than its factorization.

155857300038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6301 (or 6286 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The spelling of 155857300038 in words is "one hundred fifty-five billion, eight hundred fifty-seven million, three hundred thousand, thirty-eight".