6415312629561 has 32 divisors (see below), whose sum is σ = 9562720315776. Its totient is φ = 3824329291200.

The previous prime is 6415312629529. The next prime is 6415312629569. The reversal of 6415312629561 is 1659262135146.

It is not a de Polignac number, because 6415312629561 - 2⁵ = 6415312629529 is a prime.

It is a super-2 number, since 2×6415312629561² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6415312629569) 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, 12925606 + ... + 13412751.

It is an arithmetic number, because the mean of its divisors is an integer number (298835009868).

Almost surely, 2^{6415312629561} is an apocalyptic number.

6415312629561 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6415312629561 is a deficient number, since it is larger than the sum of its proper divisors (3147407686215).

6415312629561 is a wasteful number, since it uses less digits than its factorization.

6415312629561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26338454 (or 26338432 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 51.

The spelling of 6415312629561 in words is "six trillion, four hundred fifteen billion, three hundred twelve million, six hundred twenty-nine thousand, five hundred sixty-one".