1155626868251 has 4 divisors (see below), whose sum is σ = 1155632820600. Its totient is φ = 1155620915904.

The previous prime is 1155626868239. The next prime is 1155626868259. The reversal of 1155626868251 is 1528686265511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1155626868251 - 2¹⁴ = 1155626851867 is a prime.

It is a super-2 number, since 2×1155626868251² (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 (1155626868259) 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 3 ways as a sum of consecutive naturals, for example, 2674781 + ... + 3076638.

It is an arithmetic number, because the mean of its divisors is an integer number (288908205150).

Almost surely, 2^{1155626868251} is an apocalyptic number.

1155626868251 is a deficient number, since it is larger than the sum of its proper divisors (5952349).

1155626868251 is an equidigital number, since it uses as much as digits as its factorization.

1155626868251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5952348.

The product of its digits is 6912000, while the sum is 56.

The spelling of 1155626868251 in words is "one trillion, one hundred fifty-five billion, six hundred twenty-six million, eight hundred sixty-eight thousand, two hundred fifty-one".