39917672641 has 48 divisors (see below), whose sum is σ = 53202042880. Its totient is φ = 29234066400.

The previous prime is 39917672633. The next prime is 39917672651. The reversal of 39917672641 is 14627671993.

It is not a de Polignac number, because 39917672641 - 2³ = 39917672633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39917672651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2034046 + ... + 2053576.

Almost surely, 2^39917672641 is an apocalyptic number.

It is an amenable number.

39917672641 is a deficient number, since it is larger than the sum of its proper divisors (13284370239).

39917672641 is a wasteful number, since it uses less digits than its factorization.

39917672641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19706 (or 19695 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 55.

The spelling of 39917672641 in words is "thirty-nine billion, nine hundred seventeen million, six hundred seventy-two thousand, six hundred forty-one".