155861692340 has 48 divisors (see below), whose sum is σ = 336905920512. Its totient is φ = 60537689856.

The previous prime is 155861692333. The next prime is 155861692361. The reversal of 155861692340 is 43296168551.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 533417 + ... + 772176.

It is an arithmetic number, because the mean of its divisors is an integer number (7018873344).

Almost surely, 2^155861692340 is an apocalyptic number.

155861692340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155861692340 is an abundant number, since it is smaller than the sum of its proper divisors (181044228172).

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

155861692340 is a wasteful number, since it uses less digits than its factorization.

155861692340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305776 (or 1305774 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 155861692340 in words is "one hundred fifty-five billion, eight hundred sixty-one million, six hundred ninety-two thousand, three hundred forty".