155555386080 has 192 divisors, whose sum is σ = 512212377600. Its totient is φ = 39634882560.

The previous prime is 155555386079. The next prime is 155555386141. The reversal of 155555386080 is 80683555551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1109356 + ... + 1241684.

It is an arithmetic number, because the mean of its divisors is an integer number (2667772800).

Almost surely, 2^155555386080 is an apocalyptic number.

155555386080 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 155555386080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256106188800).

155555386080 is an abundant number, since it is smaller than the sum of its proper divisors (356656991520).

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

155555386080 is a wasteful number, since it uses less digits than its factorization.

155555386080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132457 (or 132449 counting only the distinct ones).

The product of its (nonzero) digits is 3600000, while the sum is 51.

The spelling of 155555386080 in words is "one hundred fifty-five billion, five hundred fifty-five million, three hundred eighty-six thousand, eighty".