1640970792959 has 4 divisors (see below), whose sum is σ = 1640996891160. Its totient is φ = 1640944694760.

The previous prime is 1640970792911. The next prime is 1640970792973. The reversal of 1640970792959 is 9592970790461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1640970792959 - 2³² = 1636675825663 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 (1640970791959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12954557 + ... + 13080614.

It is an arithmetic number, because the mean of its divisors is an integer number (410249222790).

Almost surely, 2^{1640970792959} is an apocalyptic number.

1640970792959 is a deficient number, since it is larger than the sum of its proper divisors (26098201).

1640970792959 is an equidigital number, since it uses as much as digits as its factorization.

1640970792959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26098200.

The product of its (nonzero) digits is 77157360, while the sum is 68.

The spelling of 1640970792959 in words is "one trillion, six hundred forty billion, nine hundred seventy million, seven hundred ninety-two thousand, nine hundred fifty-nine".