10009999950 has 24 divisors (see below), whose sum is σ = 24824800248. Its totient is φ = 2669333280.

The previous prime is 10009999949. The next prime is 10009999969. The reversal of 10009999950 is 5999990001.

It is a junction number, because it is equal to n+sod(n) for n = 10009999893 and 10009999902.

It is a congruent number.

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, 33366517 + ... + 33366816.

It is an arithmetic number, because the mean of its divisors is an integer number (1034366677).

Almost surely, 2^10009999950 is an apocalyptic number.

10009999950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10009999950 is an abundant number, since it is smaller than the sum of its proper divisors (14814800298).

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

10009999950 is a wasteful number, since it uses less digits than its factorization.

10009999950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66733348 (or 66733343 counting only the distinct ones).

The product of its (nonzero) digits is 295245, while the sum is 51.

The spelling of 10009999950 in words is "ten billion, nine million, nine hundred ninety-nine thousand, nine hundred fifty".