39745093261 has 2 divisors, whose sum is σ = 39745093262. Its totient is φ = 39745093260.

The previous prime is 39745093229. The next prime is 39745093343. The reversal of 39745093261 is 16239054793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24401564100 + 15343529161 = 156210^2 + 123869^2 .

It is a cyclic number.

It is not a de Polignac number, because 39745093261 - 2⁵ = 39745093229 is a prime.

It is a super-2 number, since 2×39745093261² (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 (39745093061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19872546630 + 19872546631.

It is an arithmetic number, because the mean of its divisors is an integer number (19872546631).

Almost surely, 2^39745093261 is an apocalyptic number.

It is an amenable number.

39745093261 is a deficient number, since it is larger than the sum of its proper divisors (1).

39745093261 is an equidigital number, since it uses as much as digits as its factorization.

39745093261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 39745093261 in words is "thirty-nine billion, seven hundred forty-five million, ninety-three thousand, two hundred sixty-one".