39461728491 has 12 divisors (see below), whose sum is σ = 57002326368. Its totient is φ = 26306871984.

The previous prime is 39461728477. The next prime is 39461728513. The reversal of 39461728491 is 19482716493.

39461728491 is a `hidden beast` number, since 3 + 94 + 61 + 7 + 2 + 8 + 491 = 666.

It is not a de Polignac number, because 39461728491 - 2⁵ = 39461728459 is a prime.

It is a super-2 number, since 2×39461728491² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (39461723491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 262921 + ... + 384773.

It is an arithmetic number, because the mean of its divisors is an integer number (4750193864).

Almost surely, 2^39461728491 is an apocalyptic number.

39461728491 is a deficient number, since it is larger than the sum of its proper divisors (17540597877).

39461728491 is a wasteful number, since it uses less digits than its factorization.

39461728491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157842 (or 157839 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The spelling of 39461728491 in words is "thirty-nine billion, four hundred sixty-one million, seven hundred twenty-eight thousand, four hundred ninety-one".