2251036721135 has 16 divisors (see below), whose sum is σ = 2754392683680. Its totient is φ = 1765560627840.

The previous prime is 2251036721123. The next prime is 2251036721173. The reversal of 2251036721135 is 5311276301522.

It is not a de Polignac number, because 2251036721135 - 2⁸ = 2251036720879 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10118696 + ... + 10338765.

It is an arithmetic number, because the mean of its divisors is an integer number (172149542730).

Almost surely, 2^{2251036721135} is an apocalyptic number.

2251036721135 is a deficient number, since it is larger than the sum of its proper divisors (503355962545).

2251036721135 is a wasteful number, since it uses less digits than its factorization.

2251036721135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20457898.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 2251036721135 in words is "two trillion, two hundred fifty-one billion, thirty-six million, seven hundred twenty-one thousand, one hundred thirty-five".