12402731061 has 24 divisors (see below), whose sum is σ = 21551949120. Its totient is φ = 6714259776.

The previous prime is 12402731053. The next prime is 12402731119. The reversal of 12402731061 is 16013720421.

It is not a de Polignac number, because 12402731061 - 2³ = 12402731053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12402731161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5179560 + ... + 5181953.

It is an arithmetic number, because the mean of its divisors is an integer number (897997880).

Almost surely, 2^12402731061 is an apocalyptic number.

It is an amenable number.

12402731061 is a deficient number, since it is larger than the sum of its proper divisors (9149218059).

12402731061 is a wasteful number, since it uses less digits than its factorization.

12402731061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10361545 (or 10361542 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The spelling of 12402731061 in words is "twelve billion, four hundred two million, seven hundred thirty-one thousand, sixty-one".