51258516793 has 4 divisors (see below), whose sum is σ = 55918381968. Its totient is φ = 46598651620.

The previous prime is 51258516731. The next prime is 51258516797. The reversal of 51258516793 is 39761585215.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51258516793 - 2²⁵ = 51224962361 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 51258516793.

It is not an unprimeable number, because it can be changed into a prime (51258516797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2329932571 + ... + 2329932592.

It is an arithmetic number, because the mean of its divisors is an integer number (13979595492).

Almost surely, 2^51258516793 is an apocalyptic number.

It is an amenable number.

51258516793 is a deficient number, since it is larger than the sum of its proper divisors (4659865175).

51258516793 is a wasteful number, since it uses less digits than its factorization.

51258516793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4659865174.

The product of its digits is 2268000, while the sum is 52.

The spelling of 51258516793 in words is "fifty-one billion, two hundred fifty-eight million, five hundred sixteen thousand, seven hundred ninety-three".