51820282542 has 64 divisors (see below), whose sum is σ = 119817460224. Its totient is φ = 14635021440.

The previous prime is 51820282513. The next prime is 51820282573. The reversal of 51820282542 is 24528202815.

It is a self number, because there is not a number n which added to its sum of digits gives 51820282542.

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, 2059228 + ... + 2084240.

It is an arithmetic number, because the mean of its divisors is an integer number (1872147816).

Almost surely, 2^51820282542 is an apocalyptic number.

51820282542 is an abundant number, since it is smaller than the sum of its proper divisors (67997177682).

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

51820282542 is a wasteful number, since it uses less digits than its factorization.

51820282542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25593.

The product of its (nonzero) digits is 102400, while the sum is 39.

The spelling of 51820282542 in words is "fifty-one billion, eight hundred twenty million, two hundred eighty-two thousand, five hundred forty-two".