155560655550 has 48 divisors (see below), whose sum is σ = 388157299200. Its totient is φ = 41228339040.

The previous prime is 155560655513. The next prime is 155560655599. The reversal of 155560655550 is 55556065551.

It is a self number, because there is not a number n which added to its sum of digits gives 155560655550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3156750 + ... + 3205649.

It is an arithmetic number, because the mean of its divisors is an integer number (8086610400).

Almost surely, 2^155560655550 is an apocalyptic number.

155560655550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155560655550 is an abundant number, since it is smaller than the sum of its proper divisors (232596643650).

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

155560655550 is a wasteful number, since it uses less digits than its factorization.

155560655550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6362577 (or 6362572 counting only the distinct ones).

The product of its (nonzero) digits is 2812500, while the sum is 48.

The spelling of 155560655550 in words is "one hundred fifty-five billion, five hundred sixty million, six hundred fifty-five thousand, five hundred fifty".