51680137401 has 32 divisors (see below), whose sum is σ = 77047152000. Its totient is φ = 34235939520.

The previous prime is 51680137393. The next prime is 51680137433. The reversal of 51680137401 is 10473108615.

51680137401 is a `hidden beast` number, since 516 + 8 + 0 + 137 + 4 + 0 + 1 = 666.

It is not a de Polignac number, because 51680137401 - 2³ = 51680137393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51680187401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7566550 + ... + 7573376.

It is an arithmetic number, because the mean of its divisors is an integer number (2407723500).

Almost surely, 2^51680137401 is an apocalyptic number.

It is an amenable number.

51680137401 is a deficient number, since it is larger than the sum of its proper divisors (25367014599).

51680137401 is a wasteful number, since it uses less digits than its factorization.

51680137401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8566 (or 8560 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 51680137401 in words is "fifty-one billion, six hundred eighty million, one hundred thirty-seven thousand, four hundred one".