155622399680 has 112 divisors (see below), whose sum is σ = 410892406560. Its totient is φ = 55662182400.

The previous prime is 155622399677. The next prime is 155622399683. The reversal of 155622399680 is 86993226551.

It is an interprime number because it is at equal distance from previous prime (155622399677) and next prime (155622399683).

It is not an unprimeable number, because it can be changed into a prime (155622399683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147665 + ... + 577104.

Almost surely, 2^155622399680 is an apocalyptic number.

155622399680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155622399680 is an abundant number, since it is smaller than the sum of its proper divisors (255270006880).

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

155622399680 is a wasteful number, since it uses less digits than its factorization.

155622399680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724858 (or 724848 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 56.

The spelling of 155622399680 in words is "one hundred fifty-five billion, six hundred twenty-two million, three hundred ninety-nine thousand, six hundred eighty".