12699847440 has 1200 divisors, whose sum is σ = 56157691392. Its totient is φ = 2644088832.

The previous prime is 12699847411. The next prime is 12699847453. The reversal of 12699847440 is 4474899621.

12699847440 is a `hidden beast` number, since 12 + 69 + 98 + 47 + 440 = 666.

It is a super-2 number, since 2×12699847440² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 270209497 + ... + 270209543.

Almost surely, 2^12699847440 is an apocalyptic number.

12699847440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12699847440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28078845696).

12699847440 is an abundant number, since it is smaller than the sum of its proper divisors (43457843952).

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

12699847440 is a wasteful number, since it uses less digits than its factorization.

12699847440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 12699847440 in words is "twelve billion, six hundred ninety-nine million, eight hundred forty-seven thousand, four hundred forty".