155420814680 has 32 divisors (see below), whose sum is σ = 353301963840. Its totient is φ = 61527413760.

The previous prime is 155420814667. The next prime is 155420814691. The reversal of 155420814680 is 86418024551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20024576 + ... + 20032335.

It is an arithmetic number, because the mean of its divisors is an integer number (11040686370).

Almost surely, 2^155420814680 is an apocalyptic number.

155420814680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155420814680 is an abundant number, since it is smaller than the sum of its proper divisors (197881149160).

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

155420814680 is a wasteful number, since it uses less digits than its factorization.

155420814680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40057019 (or 40057015 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 44.

The spelling of 155420814680 in words is "one hundred fifty-five billion, four hundred twenty million, eight hundred fourteen thousand, six hundred eighty".