12447734490 has 24 divisors (see below), whose sum is σ = 32364109908. Its totient is φ = 3319395840.

The previous prime is 12447734483. The next prime is 12447734501. The reversal of 12447734490 is 9443774421.

12447734490 is a `hidden beast` number, since 12 + 447 + 73 + 44 + 90 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11356951761 + 1090782729 = 106569^2 + 33027^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69153991 + ... + 69154170.

Almost surely, 2^12447734490 is an apocalyptic number.

12447734490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12447734490 is an abundant number, since it is smaller than the sum of its proper divisors (19916375418).

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

12447734490 is a wasteful number, since it uses less digits than its factorization.

12447734490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138308174 (or 138308171 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 12447734490 in words is "twelve billion, four hundred forty-seven million, seven hundred thirty-four thousand, four hundred ninety".