3890721670368 has 96 divisors (see below), whose sum is σ = 10999502438400. Its totient is φ = 1197065504256.

The previous prime is 3890721670321. The next prime is 3890721670379. The reversal of 3890721670368 is 8630761270983.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 20270593 + ... + 20461631.

It is an arithmetic number, because the mean of its divisors is an integer number (114578150400).

Almost surely, 2^{3890721670368} is an apocalyptic number.

It is an amenable number.

3890721670368 is an abundant number, since it is smaller than the sum of its proper divisors (7108780768032).

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

3890721670368 is a wasteful number, since it uses less digits than its factorization.

3890721670368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207384 (or 207376 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 60.

The spelling of 3890721670368 in words is "three trillion, eight hundred ninety billion, seven hundred twenty-one million, six hundred seventy thousand, three hundred sixty-eight".