12157397551 has 16 divisors (see below), whose sum is σ = 14074905600. Its totient is φ = 10405356768.

The previous prime is 12157397537. The next prime is 12157397579. The reversal of 12157397551 is 15579375121.

12157397551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12157397551 - 2⁵ = 12157397519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12157397251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512011 + ... + 535228.

It is an arithmetic number, because the mean of its divisors is an integer number (879681600).

Almost surely, 2^12157397551 is an apocalyptic number.

12157397551 is a deficient number, since it is larger than the sum of its proper divisors (1917508049).

12157397551 is a wasteful number, since it uses less digits than its factorization.

12157397551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047318.

The product of its digits is 330750, while the sum is 46.

The spelling of 12157397551 in words is "twelve billion, one hundred fifty-seven million, three hundred ninety-seven thousand, five hundred fifty-one".