12531040464 has 40 divisors (see below), whose sum is σ = 32500857312. Its totient is φ = 4160368000.

The previous prime is 12531040463. The next prime is 12531040469. The reversal of 12531040464 is 46404013521.

It is a super-2 number, since 2×12531040464² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531040463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507999 + ... + 532094.

Almost surely, 2^12531040464 is an apocalyptic number.

It is an amenable number.

12531040464 is an abundant number, since it is smaller than the sum of its proper divisors (19969816848).

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

12531040464 is a wasteful number, since it uses less digits than its factorization.

12531040464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040355 (or 1040349 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 12531040464 its reverse (46404013521), we get a palindrome (58935053985).

The spelling of 12531040464 in words is "twelve billion, five hundred thirty-one million, forty thousand, four hundred sixty-four".