290385434663 has 16 divisors (see below), whose sum is σ = 303680110080. Its totient is φ = 277147198944.

The previous prime is 290385434659. The next prime is 290385434671. The reversal of 290385434663 is 366434583092.

It is a cyclic number.

It is not a de Polignac number, because 290385434663 - 2² = 290385434659 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 (290385434063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21960668 + ... + 21973886.

It is an arithmetic number, because the mean of its divisors is an integer number (18980006880).

Almost surely, 2^290385434663 is an apocalyptic number.

290385434663 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

290385434663 is a deficient number, since it is larger than the sum of its proper divisors (13294675417).

290385434663 is a wasteful number, since it uses less digits than its factorization.

290385434663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15278.

The product of its (nonzero) digits is 11197440, while the sum is 53.

The spelling of 290385434663 in words is "two hundred ninety billion, three hundred eighty-five million, four hundred thirty-four thousand, six hundred sixty-three".