39966033987 has 160 divisors (see below), whose sum is σ = 71591731200. Its totient is φ = 21946982400.

The previous prime is 39966033917. The next prime is 39966034027. The reversal of 39966033987 is 78933066993.

It is not a de Polignac number, because 39966033987 - 2¹² = 39966029891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39966033917) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 62349187 + ... + 62349827.

It is an arithmetic number, because the mean of its divisors is an integer number (447448320).

Almost surely, 2^39966033987 is an apocalyptic number.

39966033987 is a deficient number, since it is larger than the sum of its proper divisors (31625697213).

39966033987 is a wasteful number, since it uses less digits than its factorization.

39966033987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 39680928, while the sum is 63.

The spelling of 39966033987 in words is "thirty-nine billion, nine hundred sixty-six million, thirty-three thousand, nine hundred eighty-seven".