51747662253 has 16 divisors (see below), whose sum is σ = 78857313920. Its totient is φ = 29568692736.

The previous prime is 51747662207. The next prime is 51747662297. The reversal of 51747662253 is 35226674715.

It is not a de Polignac number, because 51747662253 - 2³² = 47452694957 is a prime.

It is a super-2 number, since 2×51747662253² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51747661253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 537153 + ... + 626121.

It is an arithmetic number, because the mean of its divisors is an integer number (4928582120).

Almost surely, 2^51747662253 is an apocalyptic number.

It is an amenable number.

51747662253 is a deficient number, since it is larger than the sum of its proper divisors (27109651667).

51747662253 is a wasteful number, since it uses less digits than its factorization.

51747662253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116676.

The product of its digits is 2116800, while the sum is 48.

The spelling of 51747662253 in words is "fifty-one billion, seven hundred forty-seven million, six hundred sixty-two thousand, two hundred fifty-three".