1015557055651 has 8 divisors (see below), whose sum is σ = 1048467008384. Its totient is φ = 982656480960.

The previous prime is 1015557055649. The next prime is 1015557055687. The reversal of 1015557055651 is 1565507555101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1015557055651 - 2¹ = 1015557055649 is a prime.

It is a super-2 number, since 2×1015557055651² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1015557005651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2124090 + ... + 2557903.

It is an arithmetic number, because the mean of its divisors is an integer number (131058376048).

Almost surely, 2^{1015557055651} is an apocalyptic number.

1015557055651 is a deficient number, since it is larger than the sum of its proper divisors (32909952733).

1015557055651 is an equidigital number, since it uses as much as digits as its factorization.

1015557055651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4689021.

The product of its (nonzero) digits is 656250, while the sum is 46.

The spelling of 1015557055651 in words is "one trillion, fifteen billion, five hundred fifty-seven million, fifty-five thousand, six hundred fifty-one".