12637989450 has 72 divisors (see below), whose sum is σ = 34383960000. Its totient is φ = 3327461280.

The previous prime is 12637989407. The next prime is 12637989467. The reversal of 12637989450 is 5498973621.

It is a super-2 number, since 2×12637989450² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 142200 + ... + 213299.

It is an arithmetic number, because the mean of its divisors is an integer number (477555000).

It is a 1-persistent number, because it is pandigital, but 2⋅12637989450 = 25275978900 is not.

Almost surely, 2^12637989450 is an apocalyptic number.

12637989450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12637989450 is an abundant number, since it is smaller than the sum of its proper divisors (21745970550).

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

12637989450 is a wasteful number, since it uses less digits than its factorization.

12637989450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355596 (or 355588 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 12637989450 in words is "twelve billion, six hundred thirty-seven million, nine hundred eighty-nine thousand, four hundred fifty".