51375040771 has 4 divisors (see below), whose sum is σ = 51453716832. Its totient is φ = 51296364712.

The previous prime is 51375040609. The next prime is 51375040781. The reversal of 51375040771 is 17704057315.

51375040771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51375040771 - 2⁹ = 51375040259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51375040781) 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, 39337051 + ... + 39338356.

It is an arithmetic number, because the mean of its divisors is an integer number (12863429208).

Almost surely, 2^51375040771 is an apocalyptic number.

51375040771 is a deficient number, since it is larger than the sum of its proper divisors (78676061).

51375040771 is an equidigital number, since it uses as much as digits as its factorization.

51375040771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78676060.

The product of its (nonzero) digits is 102900, while the sum is 40.

The spelling of 51375040771 in words is "fifty-one billion, three hundred seventy-five million, forty thousand, seven hundred seventy-one".