20320002890965 has 8 divisors (see below), whose sum is σ = 24399158235480. Its totient is φ = 16245899135232.

The previous prime is 20320002890959. The next prime is 20320002890983. The reversal of 20320002890965 is 56909820002302.

It can be written as a sum of positive squares in 4 ways, for example, as 11439161845489 + 8880841045476 = 3382183^2 + 2980074^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20320002890965 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1262888344 + ... + 1262904433.

It is an arithmetic number, because the mean of its divisors is an integer number (3049894779435).

Almost surely, 2^{20320002890965} is an apocalyptic number.

It is an amenable number.

20320002890965 is a deficient number, since it is larger than the sum of its proper divisors (4079155344515).

20320002890965 is a wasteful number, since it uses less digits than its factorization.

20320002890965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525794391.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 20320002890965 in words is "twenty trillion, three hundred twenty billion, two million, eight hundred ninety thousand, nine hundred sixty-five".