12765428031 has 16 divisors (see below), whose sum is σ = 17817090048. Its totient is φ = 8119759200.

The previous prime is 12765427981. The next prime is 12765428041. The reversal of 12765428031 is 13082456721.

It is not a de Polignac number, because 12765428031 - 2¹⁴ = 12765411647 is a prime.

It is a super-2 number, since 2×12765428031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12765428041) 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, 960036 + ... + 973241.

It is an arithmetic number, because the mean of its divisors is an integer number (1113568128).

Almost surely, 2^12765428031 is an apocalyptic number.

12765428031 is a deficient number, since it is larger than the sum of its proper divisors (5051662017).

12765428031 is a wasteful number, since it uses less digits than its factorization.

12765428031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933382.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 12765428031 in words is "twelve billion, seven hundred sixty-five million, four hundred twenty-eight thousand, thirty-one".