51057062565 has 8 divisors (see below), whose sum is σ = 81691300128. Its totient is φ = 27230433360.

The previous prime is 51057062477. The next prime is 51057062627. The reversal of 51057062565 is 56526075015.

It is a happy number.

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

It is not a de Polignac number, because 51057062565 - 2²¹ = 51054965413 is a prime.

It is a congruent number.

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, 1701902071 + ... + 1701902100.

It is an arithmetic number, because the mean of its divisors is an integer number (10211412516).

Almost surely, 2^51057062565 is an apocalyptic number.

It is an amenable number.

51057062565 is a deficient number, since it is larger than the sum of its proper divisors (30634237563).

51057062565 is a wasteful number, since it uses less digits than its factorization.

51057062565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403804179.

The product of its (nonzero) digits is 315000, while the sum is 42.

The spelling of 51057062565 in words is "fifty-one billion, fifty-seven million, sixty-two thousand, five hundred sixty-five".