12610801621 has 12 divisors (see below), whose sum is σ = 13865839456. Its totient is φ = 11460742920.

The previous prime is 12610801561. The next prime is 12610801661.

12610801621 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12610801621 - 2⁷ = 12610801493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12610801621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12610801661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 414496 + ... + 443878.

Almost surely, 2^12610801621 is an apocalyptic number.

12610801621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12610801621 is a deficient number, since it is larger than the sum of its proper divisors (1255037835).

12610801621 is a wasteful number, since it uses less digits than its factorization.

12610801621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32952 (or 32941 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 12610801621 in words is "twelve billion, six hundred ten million, eight hundred one thousand, six hundred twenty-one".