12400653361 has 2 divisors, whose sum is σ = 12400653362. Its totient is φ = 12400653360.

The previous prime is 12400653337. The next prime is 12400653407. The reversal of 12400653361 is 16335600421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11544213136 + 856440225 = 107444^2 + 29265^2 .

It is a cyclic number.

It is not a de Polignac number, because 12400653361 - 2²⁷ = 12266435633 is a prime.

It is not a weakly prime, because it can be changed into another prime (12400653301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200326680 + 6200326681.

It is an arithmetic number, because the mean of its divisors is an integer number (6200326681).

Almost surely, 2^12400653361 is an apocalyptic number.

It is an amenable number.

12400653361 is a deficient number, since it is larger than the sum of its proper divisors (1).

12400653361 is an equidigital number, since it uses as much as digits as its factorization.

12400653361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 12400653361 in words is "twelve billion, four hundred million, six hundred fifty-three thousand, three hundred sixty-one".