11631536512 has 32 divisors (see below), whose sum is σ = 23234420880. Its totient is φ = 5800152576.

The previous prime is 11631536503. The next prime is 11631536513. The reversal of 11631536512 is 21563513611.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×11631536512² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11631536513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74068 + ... + 169555.

Almost surely, 2^11631536512 is an apocalyptic number.

It is an amenable number.

11631536512 is a deficient number, since it is larger than the sum of its proper divisors (11602884368).

11631536512 is an equidigital number, since it uses as much as digits as its factorization.

11631536512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244010 (or 243998 counting only the distinct ones).

The product of its digits is 16200, while the sum is 34.

The spelling of 11631536512 in words is "eleven billion, six hundred thirty-one million, five hundred thirty-six thousand, five hundred twelve".