51268707983 has 2 divisors, whose sum is σ = 51268707984. Its totient is φ = 51268707982.

The previous prime is 51268707979. The next prime is 51268708063. The reversal of 51268707983 is 38970786215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51268707983 - 2² = 51268707979 is a prime.

It is a super-2 number, since 2×51268707983² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51268707383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25634353991 + 25634353992.

It is an arithmetic number, because the mean of its divisors is an integer number (25634353992).

Almost surely, 2^51268707983 is an apocalyptic number.

51268707983 is a deficient number, since it is larger than the sum of its proper divisors (1).

51268707983 is an equidigital number, since it uses as much as digits as its factorization.

51268707983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 51268707983 in words is "fifty-one billion, two hundred sixty-eight million, seven hundred seven thousand, nine hundred eighty-three".