155655508838140 has 12 divisors (see below), whose sum is σ = 326876568560136. Its totient is φ = 62262203535248.

The previous prime is 155655508838021. The next prime is 155655508838147. The reversal of 155655508838140 is 41838805556551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155655508838147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3891387720934 + ... + 3891387720973.

It is an arithmetic number, because the mean of its divisors is an integer number (27239714046678).

Almost surely, 2^{155655508838140} is an apocalyptic number.

155655508838140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155655508838140 is an abundant number, since it is smaller than the sum of its proper divisors (171221059721996).

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

155655508838140 is a wasteful number, since it uses less digits than its factorization.

155655508838140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7782775441916 (or 7782775441914 counting only the distinct ones).

The product of its (nonzero) digits is 115200000, while the sum is 64.

The spelling of 155655508838140 in words is "one hundred fifty-five trillion, six hundred fifty-five billion, five hundred eight million, eight hundred thirty-eight thousand, one hundred forty".