51736861252 has 6 divisors (see below), whose sum is σ = 90539507198. Its totient is φ = 25868430624.

The previous prime is 51736861247. The next prime is 51736861259. The reversal of 51736861252 is 25216863715.

It can be written as a sum of positive squares in only one way, i.e., 51598939716 + 137921536 = 227154^2 + 11744^2 .

It is not an unprimeable number, because it can be changed into a prime (51736861259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6467107653 + ... + 6467107660.

Almost surely, 2^51736861252 is an apocalyptic number.

It is an amenable number.

51736861252 is a deficient number, since it is larger than the sum of its proper divisors (38802645946).

51736861252 is a wasteful number, since it uses less digits than its factorization.

51736861252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12934215317 (or 12934215315 counting only the distinct ones).

The product of its digits is 604800, while the sum is 46.

The spelling of 51736861252 in words is "fifty-one billion, seven hundred thirty-six million, eight hundred sixty-one thousand, two hundred fifty-two".