12620404501 has 6 divisors (see below), whose sum is σ = 12630705506. Its totient is φ = 12610111200.

The previous prime is 12620404477. The next prime is 12620404507. The reversal of 12620404501 is 10540402621.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 8254631025 + 4365773476 = 90855^2 + 66074^2 .

It is not a de Polignac number, because 12620404501 - 2⁹ = 12620403989 is a prime.

It is a super-2 number, since 2×12620404501² (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 (12620404507) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2959711 + ... + 2963971.

Almost surely, 2^12620404501 is an apocalyptic number.

It is an amenable number.

12620404501 is a deficient number, since it is larger than the sum of its proper divisors (10301005).

12620404501 is an frugal number, since it uses more digits than its factorization.

12620404501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7703 (or 5982 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The spelling of 12620404501 in words is "twelve billion, six hundred twenty million, four hundred four thousand, five hundred one".