20313460657 has 8 divisors (see below), whose sum is σ = 23233156416. Its totient is φ = 17398208112.

The previous prime is 20313460631. The next prime is 20313460681. The reversal of 20313460657 is 75606431302.

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 20313460657 - 2¹⁵ = 20313427889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20313460357) 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, 1100998 + ... + 1119295.

It is an arithmetic number, because the mean of its divisors is an integer number (2904144552).

Almost surely, 2^20313460657 is an apocalyptic number.

It is an amenable number.

20313460657 is a deficient number, since it is larger than the sum of its proper divisors (2919695759).

20313460657 is a wasteful number, since it uses less digits than its factorization.

20313460657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221607.

The product of its (nonzero) digits is 90720, while the sum is 37.

Adding to 20313460657 its reverse (75606431302), we get a palindrome (95919891959).

The spelling of 20313460657 in words is "twenty billion, three hundred thirteen million, four hundred sixty thousand, six hundred fifty-seven".