39640667334 has 16 divisors (see below), whose sum is σ = 79886537280. Its totient is φ = 13112688680.

The previous prime is 39640667333. The next prime is 39640667399. The reversal of 39640667334 is 43376604693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39640667333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25215924 + ... + 25217495.

It is an arithmetic number, because the mean of its divisors is an integer number (4992908580).

Almost surely, 2^39640667334 is an apocalyptic number.

39640667334 is an abundant number, since it is smaller than the sum of its proper divisors (40245869946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39640667334 is a wasteful number, since it uses less digits than its factorization.

39640667334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50433555.

The product of its (nonzero) digits is 5878656, while the sum is 51.

The spelling of 39640667334 in words is "thirty-nine billion, six hundred forty million, six hundred sixty-seven thousand, three hundred thirty-four".