155990586555 has 48 divisors (see below), whose sum is σ = 280883875584. Its totient is φ = 79998347520.

The previous prime is 155990586551. The next prime is 155990586581. The reversal of 155990586555 is 555685099551.

155990586555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155990586555 - 2² = 155990586551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155990586492 and 155990586501.

It is not an unprimeable number, because it can be changed into a prime (155990586551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137104 + ... + 575133.

It is an arithmetic number, because the mean of its divisors is an integer number (5851747408).

Almost surely, 2^155990586555 is an apocalyptic number.

155990586555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155990586555 is a deficient number, since it is larger than the sum of its proper divisors (124893289029).

155990586555 is a wasteful number, since it uses less digits than its factorization.

155990586555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712436 (or 712433 counting only the distinct ones).

The product of its (nonzero) digits is 60750000, while the sum is 63.

The spelling of 155990586555 in words is "one hundred fifty-five billion, nine hundred ninety million, five hundred eighty-six thousand, five hundred fifty-five".