12612517450 has 48 divisors (see below), whose sum is σ = 25946698680. Its totient is φ = 4531057920.

The previous prime is 12612517409. The next prime is 12612517453. The reversal of 12612517450 is 5471521621.

It can be written as a sum of positive squares in 12 ways, for example, as 110817729 + 12501699721 = 10527^2 + 111811^2 .

It is not an unprimeable number, because it can be changed into a prime (12612517453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238165 + ... + 286264.

Almost surely, 2^12612517450 is an apocalyptic number.

12612517450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12612517450 is an abundant number, since it is smaller than the sum of its proper divisors (13334181230).

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

12612517450 is a wasteful number, since it uses less digits than its factorization.

12612517450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524491 (or 524486 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The spelling of 12612517450 in words is "twelve billion, six hundred twelve million, five hundred seventeen thousand, four hundred fifty".