20459290957 has 8 divisors (see below), whose sum is σ = 23414572800. Its totient is φ = 17512140624.

The previous prime is 20459290949. The next prime is 20459290963. The reversal of 20459290957 is 75909295402.

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 20459290957 - 2³ = 20459290949 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 (20459290987) 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, 2027482 + ... + 2037547.

It is an arithmetic number, because the mean of its divisors is an integer number (2926821600).

Almost surely, 2^20459290957 is an apocalyptic number.

It is an amenable number.

20459290957 is a deficient number, since it is larger than the sum of its proper divisors (2955281843).

20459290957 is an equidigital number, since it uses as much as digits as its factorization.

20459290957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4065755.

The product of its (nonzero) digits is 2041200, while the sum is 52.

The spelling of 20459290957 in words is "twenty billion, four hundred fifty-nine million, two hundred ninety thousand, nine hundred fifty-seven".