12247963440 has 80 divisors (see below), whose sum is σ = 38201745408. Its totient is φ = 3246075648.

The previous prime is 12247963393. The next prime is 12247963457. The reversal of 12247963440 is 4436974221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12247963392 and 12247963401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117424 + ... + 195663.

Almost surely, 2^12247963440 is an apocalyptic number.

12247963440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12247963440 is an abundant number, since it is smaller than the sum of its proper divisors (25953781968).

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

12247963440 is a wasteful number, since it uses less digits than its factorization.

12247963440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313266 (or 313260 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 12247963440 in words is "twelve billion, two hundred forty-seven million, nine hundred sixty-three thousand, four hundred forty".