39987066850 has 24 divisors (see below), whose sum is σ = 75098050560. Its totient is φ = 15839535120.

The previous prime is 39987066809. The next prime is 39987066857. The reversal of 39987066850 is 5866078993.

It is not an unprimeable number, because it can be changed into a prime (39987066857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3877090 + ... + 3887389.

It is an arithmetic number, because the mean of its divisors is an integer number (3129085440).

Almost surely, 2^39987066850 is an apocalyptic number.

39987066850 is a deficient number, since it is larger than the sum of its proper divisors (35110983710).

39987066850 is a wasteful number, since it uses less digits than its factorization.

39987066850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7764594 (or 7764589 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 39987066850 in words is "thirty-nine billion, nine hundred eighty-seven million, sixty-six thousand, eight hundred fifty".