51542882168777 has 4 divisors (see below), whose sum is σ = 51543507111936. Its totient is φ = 51542257225620.

The previous prime is 51542882168753. The next prime is 51542882168837. The reversal of 51542882168777 is 77786128824515.

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 51542882168777 - 2²⁴ = 51542865391561 is a prime.

It is a super-2 number, since 2×51542882168777² (a number of 28 digits) contains 22 as substring.

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 51542882168777.

It is not an unprimeable number, because it can be changed into a prime (51542882168707) 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, 312347849 + ... + 312512822.

It is an arithmetic number, because the mean of its divisors is an integer number (12885876777984).

Almost surely, 2^{51542882168777} is an apocalyptic number.

It is an amenable number.

51542882168777 is a deficient number, since it is larger than the sum of its proper divisors (624943159).

51542882168777 is an equidigital number, since it uses as much as digits as its factorization.

51542882168777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624943158.

The product of its digits is 421478400, while the sum is 71.

The spelling of 51542882168777 in words is "fifty-one trillion, five hundred forty-two billion, eight hundred eighty-two million, one hundred sixty-eight thousand, seven hundred seventy-seven".