380865013255640 has 64 divisors (see below), whose sum is σ = 897717622032000. Its totient is φ = 145230761894400.

The previous prime is 380865013255631. The next prime is 380865013255663. The reversal of 380865013255640 is 46552310568083.

It is a super-3 number, since 3×380865013255640³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2077958411 + ... + 2078141690.

It is an arithmetic number, because the mean of its divisors is an integer number (14026837844250).

Almost surely, 2^{380865013255640} is an apocalyptic number.

It is an amenable number.

380865013255640 is an abundant number, since it is smaller than the sum of its proper divisors (516852608776360).

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

380865013255640 is a wasteful number, since it uses less digits than its factorization.

380865013255640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4156100220 (or 4156100216 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 56.

The spelling of 380865013255640 in words is "three hundred eighty trillion, eight hundred sixty-five billion, thirteen million, two hundred fifty-five thousand, six hundred forty".