380172821620765 has 16 divisors (see below), whose sum is σ = 456376373139456. Its totient is φ = 304025601830400.

The previous prime is 380172821620759. The next prime is 380172821620783. The reversal of 380172821620765 is 567026128271083.

It is a de Polignac number, because none of the positive numbers 2^k-380172821620765 is a prime.

It is a Duffinian number.

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, 2269320205 + ... + 2269487725.

It is an arithmetic number, because the mean of its divisors is an integer number (28523523321216).

Almost surely, 2^{380172821620765} is an apocalyptic number.

It is an amenable number.

380172821620765 is a deficient number, since it is larger than the sum of its proper divisors (76203551518691).

380172821620765 is a wasteful number, since it uses less digits than its factorization.

380172821620765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332940.

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 380172821620765 in words is "three hundred eighty trillion, one hundred seventy-two billion, eight hundred twenty-one million, six hundred twenty thousand, seven hundred sixty-five".