12440591634 has 16 divisors (see below), whose sum is σ = 25137691488. Its totient is φ = 4104112512.

The previous prime is 12440591623. The next prime is 12440591641. The reversal of 12440591634 is 43619504421.

It is a junction number, because it is equal to n+sod(n) for n = 12440591592 and 12440591601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10687212 + ... + 10688375.

It is an arithmetic number, because the mean of its divisors is an integer number (1571105718).

Almost surely, 2^12440591634 is an apocalyptic number.

12440591634 is an abundant number, since it is smaller than the sum of its proper divisors (12697099854).

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

12440591634 is a wasteful number, since it uses less digits than its factorization.

12440591634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21375689.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 12440591634 in words is "twelve billion, four hundred forty million, five hundred ninety-one thousand, six hundred thirty-four".