11173385817631 has 2 divisors, whose sum is σ = 11173385817632. Its totient is φ = 11173385817630.

The previous prime is 11173385817547. The next prime is 11173385817661. The reversal of 11173385817631 is 13671858337111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11173385817631 - 2²⁹ = 11172848946719 is a prime.

It is a super-2 number, since 2×11173385817631² (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 (11173385817661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5586692908815 + 5586692908816.

It is an arithmetic number, because the mean of its divisors is an integer number (5586692908816).

Almost surely, 2^{11173385817631} is an apocalyptic number.

11173385817631 is a deficient number, since it is larger than the sum of its proper divisors (1).

11173385817631 is an equidigital number, since it uses as much as digits as its factorization.

11173385817631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 55.

The spelling of 11173385817631 in words is "eleven trillion, one hundred seventy-three billion, three hundred eighty-five million, eight hundred seventeen thousand, six hundred thirty-one".