51283851038536 has 8 divisors (see below), whose sum is σ = 96157220697270. Its totient is φ = 25641925519264.

The previous prime is 51283851038533. The next prime is 51283851038557. The reversal of 51283851038536 is 63583015838215.

It can be written as a sum of positive squares in only one way, i.e., 40885870370436 + 10397980668100 = 6394206^2 + 3224590^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (51283851038531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3205240689901 + ... + 3205240689916.

Almost surely, 2^{51283851038536} is an apocalyptic number.

It is an amenable number.

51283851038536 is a deficient number, since it is larger than the sum of its proper divisors (44873369658734).

51283851038536 is a wasteful number, since it uses less digits than its factorization.

51283851038536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6410481379823 (or 6410481379819 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 58.

The spelling of 51283851038536 in words is "fifty-one trillion, two hundred eighty-three billion, eight hundred fifty-one million, thirty-eight thousand, five hundred thirty-six".