12690139293 has 32 divisors (see below), whose sum is σ = 20281788800. Its totient is φ = 7795657728.

The previous prime is 12690139289. The next prime is 12690139303. The reversal of 12690139293 is 39293109621.

It is not a de Polignac number, because 12690139293 - 2² = 12690139289 is a prime.

It is a super-2 number, since 2×12690139293² (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 (12690139283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171198 + ... + 233856.

It is an arithmetic number, because the mean of its divisors is an integer number (633805900).

Almost surely, 2^12690139293 is an apocalyptic number.

12690139293 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12690139293 is a deficient number, since it is larger than the sum of its proper divisors (7591649507).

12690139293 is a wasteful number, since it uses less digits than its factorization.

12690139293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63258 (or 63252 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The spelling of 12690139293 in words is "twelve billion, six hundred ninety million, one hundred thirty-nine thousand, two hundred ninety-three".