1362561816731 has 2 divisors, whose sum is σ = 1362561816732. Its totient is φ = 1362561816730.

The previous prime is 1362561816709. The next prime is 1362561816799. The reversal of 1362561816731 is 1376181652631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1362561816731 - 2²² = 1362557622427 is a prime.

It is a super-2 number, since 2×1362561816731² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1362561816731.

It is not a weakly prime, because it can be changed into another prime (1362561816131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 681280908365 + 681280908366.

It is an arithmetic number, because the mean of its divisors is an integer number (681280908366).

Almost surely, 2^{1362561816731} is an apocalyptic number.

1362561816731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1362561816731 is an equidigital number, since it uses as much as digits as its factorization.

1362561816731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 50.

The spelling of 1362561816731 in words is "one trillion, three hundred sixty-two billion, five hundred sixty-one million, eight hundred sixteen thousand, seven hundred thirty-one".