12959620515 has 80 divisors (see below), whose sum is σ = 23689670400. Its totient is φ = 6776094528.

The previous prime is 12959620511. The next prime is 12959620517. The reversal of 12959620515 is 51502695921.

12959620515 is a `hidden beast` number, since 1 + 2 + 9 + 5 + 9 + 620 + 5 + 15 = 666.

It is not a de Polignac number, because 12959620515 - 2² = 12959620511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (12959620511) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 15746394 + ... + 15747216.

It is an arithmetic number, because the mean of its divisors is an integer number (296120880).

Almost surely, 2^12959620515 is an apocalyptic number.

12959620515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12959620515 is a deficient number, since it is larger than the sum of its proper divisors (10730049885).

12959620515 is an equidigital number, since it uses as much as digits as its factorization.

12959620515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558 (or 1549 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 12959620515 in words is "twelve billion, nine hundred fifty-nine million, six hundred twenty thousand, five hundred fifteen".