155057198644260 has 288 divisors, whose sum is σ = 525669071735808. Its totient is φ = 36670818320640.

The previous prime is 155057198644237. The next prime is 155057198644331. The reversal of 155057198644260 is 62446891750551.

It is a happy number.

155057198644260 is a `hidden beast` number, since 1 + 5 + 5 + 0 + 57 + 1 + 9 + 86 + 442 + 60 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 68963779 + ... + 71176661.

It is an arithmetic number, because the mean of its divisors is an integer number (1825239832416).

Almost surely, 2^{155057198644260} is an apocalyptic number.

155057198644260 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 155057198644260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262834535867904).

155057198644260 is an abundant number, since it is smaller than the sum of its proper divisors (370611873091548).

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

155057198644260 is a wasteful number, since it uses less digits than its factorization.

155057198644260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213775 (or 2213770 counting only the distinct ones).

The product of its (nonzero) digits is 72576000, while the sum is 63.

The spelling of 155057198644260 in words is "one hundred fifty-five trillion, fifty-seven billion, one hundred ninety-eight million, six hundred forty-four thousand, two hundred sixty".