12407606621 has 8 divisors (see below), whose sum is σ = 13139738424. Its totient is φ = 11675727360.

The previous prime is 12407606609. The next prime is 12407606641. The reversal of 12407606621 is 12660670421.

It can be written as a sum of positive squares in 4 ways, for example, as 9578536900 + 2829069721 = 97870^2 + 53189^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12407606621 is a prime.

It is a super-2 number, since 2×12407606621² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12407606641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43151 + ... + 163331.

It is an arithmetic number, because the mean of its divisors is an integer number (1642467303).

Almost surely, 2^12407606621 is an apocalyptic number.

It is an amenable number.

12407606621 is a deficient number, since it is larger than the sum of its proper divisors (732131803).

12407606621 is a wasteful number, since it uses less digits than its factorization.

12407606621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126271.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 12407606621 in words is "twelve billion, four hundred seven million, six hundred six thousand, six hundred twenty-one".