11980285533631 has 2 divisors, whose sum is σ = 11980285533632. Its totient is φ = 11980285533630.

The previous prime is 11980285533613. The next prime is 11980285533737. The reversal of 11980285533631 is 13633558208911.

It is a happy number.

Together with previous prime (11980285533613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11980285533631 - 2³⁵ = 11945925795263 is a prime.

It is a super-2 number, since 2×11980285533631² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11980285533611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5990142766815 + 5990142766816.

It is an arithmetic number, because the mean of its divisors is an integer number (5990142766816).

Almost surely, 2^{11980285533631} is an apocalyptic number.

11980285533631 is a deficient number, since it is larger than the sum of its proper divisors (1).

11980285533631 is an equidigital number, since it uses as much as digits as its factorization.

11980285533631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 11980285533631 in words is "eleven trillion, nine hundred eighty billion, two hundred eighty-five million, five hundred thirty-three thousand, six hundred thirty-one".