11631694852638 has 48 divisors (see below), whose sum is σ = 28911806516736. Its totient is φ = 3310705098000.

The previous prime is 11631694852619. The next prime is 11631694852649. The reversal of 11631694852638 is 83625849613611.

It is a happy number.

11631694852638 is a `hidden beast` number, since 1 + 1 + 6 + 3 + 1 + 69 + 48 + 526 + 3 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175470738 + ... + 175537013.

It is an arithmetic number, because the mean of its divisors is an integer number (602329302432).

Almost surely, 2^{11631694852638} is an apocalyptic number.

11631694852638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11631694852638 is an abundant number, since it is smaller than the sum of its proper divisors (17280111664098).

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

11631694852638 is a wasteful number, since it uses less digits than its factorization.

11631694852638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351008029 (or 351008026 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 11631694852638 in words is "eleven trillion, six hundred thirty-one billion, six hundred ninety-four million, eight hundred fifty-two thousand, six hundred thirty-eight".