39964068751 has 2 divisors, whose sum is σ = 39964068752. Its totient is φ = 39964068750.

The previous prime is 39964068733. The next prime is 39964068791. The reversal of 39964068751 is 15786046993.

39964068751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39964068751 - 2¹⁹ = 39963544463 is a prime.

It is a super-2 number, since 2×39964068751² (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 (39964068791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19982034375 + 19982034376.

It is an arithmetic number, because the mean of its divisors is an integer number (19982034376).

Almost surely, 2^39964068751 is an apocalyptic number.

39964068751 is a deficient number, since it is larger than the sum of its proper divisors (1).

39964068751 is an equidigital number, since it uses as much as digits as its factorization.

39964068751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 39964068751 in words is "thirty-nine billion, nine hundred sixty-four million, sixty-eight thousand, seven hundred fifty-one".