10639426650 has 24 divisors (see below), whose sum is σ = 26385778464. Its totient is φ = 2837180400.

The previous prime is 10639426573. The next prime is 10639426697. The reversal of 10639426650 is 5662493601.

It is a super-2 number, since 2×10639426650² (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 11 ways as a sum of consecutive naturals, for example, 35464606 + ... + 35464905.

It is an arithmetic number, because the mean of its divisors is an integer number (1099407436).

Almost surely, 2^10639426650 is an apocalyptic number.

10639426650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10639426650 is an abundant number, since it is smaller than the sum of its proper divisors (15746351814).

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

10639426650 is a wasteful number, since it uses less digits than its factorization.

10639426650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70929526 (or 70929521 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 10639426650 in words is "ten billion, six hundred thirty-nine million, four hundred twenty-six thousand, six hundred fifty".