11355748631 has 16 divisors (see below), whose sum is σ = 12005591040. Its totient is φ = 10723450080.

The previous prime is 11355748627. The next prime is 11355748681. The reversal of 11355748631 is 13684755311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11355748631 - 2² = 11355748627 is a prime.

It is a super-2 number, since 2×11355748631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11355748681) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3769916 + ... + 3772926.

It is an arithmetic number, because the mean of its divisors is an integer number (750349440).

Almost surely, 2^11355748631 is an apocalyptic number.

11355748631 is a deficient number, since it is larger than the sum of its proper divisors (649842409).

11355748631 is a wasteful number, since it uses less digits than its factorization.

11355748631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854.

The product of its digits is 302400, while the sum is 44.

The spelling of 11355748631 in words is "eleven billion, three hundred fifty-five million, seven hundred forty-eight thousand, six hundred thirty-one".