10440636672 has 72 divisors (see below), whose sum is σ = 28433626144. Its totient is φ = 3399266304.

The previous prime is 10440636671. The next prime is 10440636677. The reversal of 10440636672 is 27663604401.

It is a happy number.

It is a super-2 number, since 2×10440636672² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10440636672.

It is not an unprimeable number, because it can be changed into a prime (10440636671) 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, 125053 + ... + 191100.

Almost surely, 2^10440636672 is an apocalyptic number.

10440636672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10440636672 is an abundant number, since it is smaller than the sum of its proper divisors (17992989472).

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

10440636672 is an equidigital number, since it uses as much as digits as its factorization.

10440636672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316215 (or 316201 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The spelling of 10440636672 in words is "ten billion, four hundred forty million, six hundred thirty-six thousand, six hundred seventy-two".