51995199753 has 64 divisors (see below), whose sum is σ = 90515392000. Its totient is φ = 28875958272.

The previous prime is 51995199701. The next prime is 51995199761. The reversal of 51995199753 is 35799159915.

It is not a de Polignac number, because 51995199753 - 2⁸ = 51995199497 is a prime.

It is a super-2 number, since 2×51995199753² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51995199793) 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, 7052253 + ... + 7059621.

It is an arithmetic number, because the mean of its divisors is an integer number (1414303000).

Almost surely, 2^51995199753 is an apocalyptic number.

It is an amenable number.

51995199753 is a deficient number, since it is larger than the sum of its proper divisors (38520192247).

51995199753 is a wasteful number, since it uses less digits than its factorization.

51995199753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8431 (or 8425 counting only the distinct ones).

The product of its digits is 17222625, while the sum is 63.

The spelling of 51995199753 in words is "fifty-one billion, nine hundred ninety-five million, one hundred ninety-nine thousand, seven hundred fifty-three".