55646316515 has 8 divisors (see below), whose sum is σ = 66815743488. Its totient is φ = 44490277440.

The previous prime is 55646316511. The next prime is 55646316533. The reversal of 55646316515 is 51561364655.

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

It is not a de Polignac number, because 55646316515 - 2² = 55646316511 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 55646316515.

It is not an unprimeable number, because it can be changed into a prime (55646316511) 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, 3337826 + ... + 3354455.

It is an arithmetic number, because the mean of its divisors is an integer number (8351967936).

Almost surely, 2^55646316515 is an apocalyptic number.

55646316515 is a deficient number, since it is larger than the sum of its proper divisors (11169426973).

55646316515 is a wasteful number, since it uses less digits than its factorization.

55646316515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6693949.

The product of its digits is 1620000, while the sum is 47.

The spelling of 55646316515 in words is "fifty-five billion, six hundred forty-six million, three hundred sixteen thousand, five hundred fifteen".