390720561263 has 8 divisors (see below), whose sum is σ = 403409817216. Its totient is φ = 378036640800.

The previous prime is 390720561251. The next prime is 390720561271. The reversal of 390720561263 is 362165027093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 390720561263 - 2³⁶ = 322001084527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390720561223) 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, 1184768 + ... + 1478213.

It is an arithmetic number, because the mean of its divisors is an integer number (50426227152).

Almost surely, 2^390720561263 is an apocalyptic number.

390720561263 is a deficient number, since it is larger than the sum of its proper divisors (12689255953).

390720561263 is a wasteful number, since it uses less digits than its factorization.

390720561263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2667745.

The product of its (nonzero) digits is 408240, while the sum is 44.

The spelling of 390720561263 in words is "three hundred ninety billion, seven hundred twenty million, five hundred sixty-one thousand, two hundred sixty-three".