51616745236245 has 64 divisors (see below), whose sum is σ = 96319924531200. Its totient is φ = 23594071281984.

The previous prime is 51616745236241. The next prime is 51616745236261. The reversal of 51616745236245 is 54263254761615.

It is not a de Polignac number, because 51616745236245 - 2² = 51616745236241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51616745236241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56569432 + ... + 57474638.

It is an arithmetic number, because the mean of its divisors is an integer number (1504998820800).

Almost surely, 2^{51616745236245} is an apocalyptic number.

It is an amenable number.

51616745236245 is a deficient number, since it is larger than the sum of its proper divisors (44703179294955).

51616745236245 is a wasteful number, since it uses less digits than its factorization.

51616745236245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916319 (or 916305 counting only the distinct ones).

The product of its digits is 36288000, while the sum is 57.

The spelling of 51616745236245 in words is "fifty-one trillion, six hundred sixteen billion, seven hundred forty-five million, two hundred thirty-six thousand, two hundred forty-five".