55775807715 has 8 divisors (see below), whose sum is σ = 89241292368. Its totient is φ = 29747097440.

The previous prime is 55775807699. The next prime is 55775807771. The reversal of 55775807715 is 51770857755.

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

It is not a de Polignac number, because 55775807715 - 2⁴ = 55775807699 is a prime.

It is a super-2 number, since 2×55775807715² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1859193576 + ... + 1859193605.

It is an arithmetic number, because the mean of its divisors is an integer number (11155161546).

Almost surely, 2^55775807715 is an apocalyptic number.

55775807715 is a deficient number, since it is larger than the sum of its proper divisors (33465484653).

55775807715 is a wasteful number, since it uses less digits than its factorization.

55775807715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3718387189.

The product of its (nonzero) digits is 12005000, while the sum is 57.

The spelling of 55775807715 in words is "fifty-five billion, seven hundred seventy-five million, eight hundred seven thousand, seven hundred fifteen".