39697634385 has 64 divisors (see below), whose sum is σ = 73011697920. Its totient is φ = 20450880000.

The previous prime is 39697634359. The next prime is 39697634419. The reversal of 39697634385 is 58343679693.

It is not a de Polignac number, because 39697634385 - 2⁸ = 39697634129 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 523530 + ... + 594540.

It is an arithmetic number, because the mean of its divisors is an integer number (1140807780).

Almost surely, 2^39697634385 is an apocalyptic number.

It is an amenable number.

39697634385 is a deficient number, since it is larger than the sum of its proper divisors (33314063535).

39697634385 is a wasteful number, since it uses less digits than its factorization.

39697634385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71167 (or 71161 counting only the distinct ones).

The product of its digits is 88179840, while the sum is 63.

The spelling of 39697634385 in words is "thirty-nine billion, six hundred ninety-seven million, six hundred thirty-four thousand, three hundred eighty-five".