51420167831286 has 40 divisors (see below), whose sum is σ = 115697353279464. Its totient is φ = 17068935366720.

The previous prime is 51420167831239. The next prime is 51420167831297. The reversal of 51420167831286 is 68213876102415.

It is a happy number.

51420167831286 is a `hidden beast` number, since 5 + 1 + 420 + 1 + 67 + 83 + 1 + 2 + 86 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 658484700 + ... + 658562783.

Almost surely, 2^{51420167831286} is an apocalyptic number.

51420167831286 is an abundant number, since it is smaller than the sum of its proper divisors (64277185448178).

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

51420167831286 is a wasteful number, since it uses less digits than its factorization.

51420167831286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317047738 (or 1317047729 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 51420167831286 in words is "fifty-one trillion, four hundred twenty billion, one hundred sixty-seven million, eight hundred thirty-one thousand, two hundred eighty-six".