51953973942 has 64 divisors (see below), whose sum is σ = 113120017920. Its totient is φ = 15812043264.

The previous prime is 51953973937. The next prime is 51953974081. The reversal of 51953973942 is 24937935915.

51953973942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7845909 + ... + 7852527.

It is an arithmetic number, because the mean of its divisors is an integer number (1767500280).

Almost surely, 2^51953973942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51953973942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56560008960).

51953973942 is an abundant number, since it is smaller than the sum of its proper divisors (61166043978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51953973942 is a wasteful number, since it uses less digits than its factorization.

51953973942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7717.

The product of its digits is 9185400, while the sum is 57.

The spelling of 51953973942 in words is "fifty-one billion, nine hundred fifty-three million, nine hundred seventy-three thousand, nine hundred forty-two".