20013657311361 has 8 divisors (see below), whose sum is σ = 30497001617344. Its totient is φ = 11436375606480.

The previous prime is 20013657311243. The next prime is 20013657311377. The reversal of 20013657311361 is 16311375631002.

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

It is not a de Polignac number, because 20013657311361 - 2⁷ = 20013657311233 is a prime.

It is a super-2 number, since 2×20013657311361² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20013657311861) 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, 476515650250 + ... + 476515650291.

It is an arithmetic number, because the mean of its divisors is an integer number (3812125202168).

Almost surely, 2^{20013657311361} is an apocalyptic number.

20013657311361 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20013657311361 is a deficient number, since it is larger than the sum of its proper divisors (10483344305983).

20013657311361 is an equidigital number, since it uses as much as digits as its factorization.

20013657311361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953031300551.

The product of its (nonzero) digits is 68040, while the sum is 39.

The spelling of 20013657311361 in words is "twenty trillion, thirteen billion, six hundred fifty-seven million, three hundred eleven thousand, three hundred sixty-one".