155567557342940 has 96 divisors (see below), whose sum is σ = 331480622592000. Its totient is φ = 61322666296320.

The previous prime is 155567557342937. The next prime is 155567557342957. The reversal of 155567557342940 is 49243755765551.

It is a happy number.

It is a super-2 number, since 2×155567557342940² (a number of 29 digits) contains 22 as substring.

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, 309003941 + ... + 309506979.

It is an arithmetic number, because the mean of its divisors is an integer number (3452923152000).

Almost surely, 2^{155567557342940} is an apocalyptic number.

155567557342940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155567557342940 is an abundant number, since it is smaller than the sum of its proper divisors (175913065249060).

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

155567557342940 is a wasteful number, since it uses less digits than its factorization.

155567557342940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504015 (or 504013 counting only the distinct ones).

The product of its (nonzero) digits is 793800000, while the sum is 68.

The spelling of 155567557342940 in words is "one hundred fifty-five trillion, five hundred sixty-seven billion, five hundred fifty-seven million, three hundred forty-two thousand, nine hundred forty".