39702493672 has 16 divisors (see below), whose sum is σ = 75662540100. Its totient is φ = 19525816320.

The previous prime is 39702493657. The next prime is 39702493679. The reversal of 39702493672 is 27639420793.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37545262756 + 2157230916 = 193766^2 + 46446^2 .

It is not an unprimeable number, because it can be changed into a prime (39702493679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40678297 + ... + 40679272.

Almost surely, 2^39702493672 is an apocalyptic number.

It is an amenable number.

39702493672 is a deficient number, since it is larger than the sum of its proper divisors (35960046428).

39702493672 is a wasteful number, since it uses less digits than its factorization.

39702493672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81357636 (or 81357632 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 52.

The spelling of 39702493672 in words is "thirty-nine billion, seven hundred two million, four hundred ninety-three thousand, six hundred seventy-two".