55156660515 has 48 divisors (see below), whose sum is σ = 104468622336. Its totient is φ = 26698420800.

The previous prime is 55156660499. The next prime is 55156660547. The reversal of 55156660515 is 51506665155.

It is not a de Polignac number, because 55156660515 - 2⁴ = 55156660499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 208680 + ... + 392250.

It is an arithmetic number, because the mean of its divisors is an integer number (2176429632).

Almost surely, 2^55156660515 is an apocalyptic number.

55156660515 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55156660515 is a deficient number, since it is larger than the sum of its proper divisors (49311961821).

55156660515 is a wasteful number, since it uses less digits than its factorization.

55156660515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184200 (or 184197 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 55156660515 in words is "fifty-five billion, one hundred fifty-six million, six hundred sixty thousand, five hundred fifteen".