7521121272651 has 16 divisors (see below), whose sum is σ = 11472987585024. Its totient is φ = 4293196824384.

The previous prime is 7521121272631. The next prime is 7521121272659. The reversal of 7521121272651 is 1562721211257.

It is not a de Polignac number, because 7521121272651 - 2⁷ = 7521121272523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7521121272659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191094855 + ... + 191134208.

It is an arithmetic number, because the mean of its divisors is an integer number (717061724064).

Almost surely, 2^{7521121272651} is an apocalyptic number.

7521121272651 is a deficient number, since it is larger than the sum of its proper divisors (3951866312373).

7521121272651 is a wasteful number, since it uses less digits than its factorization.

7521121272651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382230010.

The product of its digits is 117600, while the sum is 42.

The spelling of 7521121272651 in words is "seven trillion, five hundred twenty-one billion, one hundred twenty-one million, two hundred seventy-two thousand, six hundred fifty-one".