51125420062757 has 4 divisors (see below), whose sum is σ = 51190382477856. Its totient is φ = 51060457647660.

The previous prime is 51125420062727. The next prime is 51125420062789. The reversal of 51125420062757 is 75726002452115.

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 51125420062757 - 2²² = 51125415868453 is a prime.

It is a super-2 number, since 2×51125420062757² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51125420062727) 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, 32481206369 + ... + 32481207942.

It is an arithmetic number, because the mean of its divisors is an integer number (12797595619464).

Almost surely, 2^{51125420062757} is an apocalyptic number.

It is an amenable number.

51125420062757 is a deficient number, since it is larger than the sum of its proper divisors (64962415099).

51125420062757 is an equidigital number, since it uses as much as digits as its factorization.

51125420062757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64962415098.

The product of its (nonzero) digits is 1176000, while the sum is 47.

The spelling of 51125420062757 in words is "fifty-one trillion, one hundred twenty-five billion, four hundred twenty million, sixty-two thousand, seven hundred fifty-seven".