155555692340 has 12 divisors (see below), whose sum is σ = 326666953956. Its totient is φ = 62222276928.

The previous prime is 155555692321. The next prime is 155555692373. The reversal of 155555692340 is 43296555551.

It can be written as a sum of positive squares in 2 ways, for example, as 25139370916 + 130416321424 = 158554^2 + 361132^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3888892289 + ... + 3888892328.

It is an arithmetic number, because the mean of its divisors is an integer number (27222246163).

Almost surely, 2^155555692340 is an apocalyptic number.

155555692340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155555692340 is an abundant number, since it is smaller than the sum of its proper divisors (171111261616).

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

155555692340 is a wasteful number, since it uses less digits than its factorization.

155555692340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7777784626 (or 7777784624 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 155555692340 in words is "one hundred fifty-five billion, five hundred fifty-five million, six hundred ninety-two thousand, three hundred forty".