20980613593 has 8 divisors (see below), whose sum is σ = 21915955008. Its totient is φ = 20047200624.

The previous prime is 20980613569. The next prime is 20980613701. The reversal of 20980613593 is 39531608902.

It is a happy number.

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-20980613593 is a prime.

It is a super-2 number, since 2×20980613593² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20980613503) 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, 459846 + ... + 503407.

It is an arithmetic number, because the mean of its divisors is an integer number (2739494376).

Almost surely, 2^20980613593 is an apocalyptic number.

20980613593 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20980613593 is a deficient number, since it is larger than the sum of its proper divisors (935341415).

20980613593 is an equidigital number, since it uses as much as digits as its factorization.

20980613593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964223.

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 20980613593 in words is "twenty billion, nine hundred eighty million, six hundred thirteen thousand, five hundred ninety-three".