1055518174215 has 12 divisors (see below), whose sum is σ = 1829564835384. Its totient is φ = 562943026224.

The previous prime is 1055518174199. The next prime is 1055518174219. The reversal of 1055518174215 is 5124718155501.

1055518174215 is a `hidden beast` number, since 1 + 0 + 5 + 551 + 8 + 1 + 74 + 21 + 5 = 666.

It is not a de Polignac number, because 1055518174215 - 2⁴ = 1055518174199 is a prime.

It is a super-2 number, since 2×1055518174215² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 23455959427 = 1055518174215 / (1 + 0 + 5 + 5 + 5 + 1 + 8 + 1 + 7 + 4 + 2 + 1 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055518174219) 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 11 ways as a sum of consecutive naturals, for example, 11727979669 + ... + 11727979758.

It is an arithmetic number, because the mean of its divisors is an integer number (152463736282).

Almost surely, 2^{1055518174215} is an apocalyptic number.

1055518174215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1055518174215 is a deficient number, since it is larger than the sum of its proper divisors (774046661169).

1055518174215 is a wasteful number, since it uses less digits than its factorization.

1055518174215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23455959438 (or 23455959435 counting only the distinct ones).

The product of its (nonzero) digits is 280000, while the sum is 45.

The spelling of 1055518174215 in words is "one trillion, fifty-five billion, five hundred eighteen million, one hundred seventy-four thousand, two hundred fifteen".