20013055542731 has 2 divisors, whose sum is σ = 20013055542732. Its totient is φ = 20013055542730.

The previous prime is 20013055542719. The next prime is 20013055542737. The reversal of 20013055542731 is 13724555031002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20013055542731 - 2⁴² = 15615009031627 is a prime.

It is a super-2 number, since 2×20013055542731² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20013055542737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006527771365 + 10006527771366.

It is an arithmetic number, because the mean of its divisors is an integer number (10006527771366).

Almost surely, 2^{20013055542731} is an apocalyptic number.

20013055542731 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013055542731 is an equidigital number, since it uses as much as digits as its factorization.

20013055542731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 20013055542731 in words is "twenty trillion, thirteen billion, fifty-five million, five hundred forty-two thousand, seven hundred thirty-one".