39491672268 has 18 divisors (see below), whose sum is σ = 92148841596. Its totient is φ = 13163661288.

The previous prime is 39491672261. The next prime is 39491672347. The reversal of 39491672268 is 86227619493.

It is not an unprimeable number, because it can be changed into a prime (39491672261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 659721 + ... + 717087.

Almost surely, 2^39491672268 is an apocalyptic number.

It is an amenable number.

39491672268 is an abundant number, since it is smaller than the sum of its proper divisors (52657169328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39491672268 is an frugal number, since it uses more digits than its factorization.

39491672268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114741 (or 57372 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 57.

The spelling of 39491672268 in words is "thirty-nine billion, four hundred ninety-one million, six hundred seventy-two thousand, two hundred sixty-eight".