11631251771718 has 16 divisors (see below), whose sum is σ = 23262937760496. Its totient is φ = 3877011554400.

The previous prime is 11631251771717. The next prime is 11631251771807. The reversal of 11631251771718 is 81717715213611.

It is a happy number.

It is a super-2 number, since 2×11631251771718² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11631251771717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17743633 + ... + 18387468.

It is an arithmetic number, because the mean of its divisors is an integer number (1453933610031).

Almost surely, 2^{11631251771718} is an apocalyptic number.

11631251771718 is an abundant number, since it is smaller than the sum of its proper divisors (11631685988778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11631251771718 is a wasteful number, since it uses less digits than its factorization.

11631251771718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36184759.

The product of its digits is 493920, while the sum is 51.

The spelling of 11631251771718 in words is "eleven trillion, six hundred thirty-one billion, two hundred fifty-one million, seven hundred seventy-one thousand, seven hundred eighteen".