10000661650 has 24 divisors (see below), whose sum is σ = 21258550080. Its totient is φ = 3428798160.

The previous prime is 10000661639. The next prime is 10000661681. The reversal of 10000661650 is 5616600001.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 14286310 + ... + 14287009.

It is an arithmetic number, because the mean of its divisors is an integer number (885772920).

Almost surely, 2^10000661650 is an apocalyptic number.

10000661650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10000661650 is an abundant number, since it is smaller than the sum of its proper divisors (11257888430).

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

10000661650 is a wasteful number, since it uses less digits than its factorization.

10000661650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28573338 (or 28573333 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The spelling of 10000661650 in words is "ten billion, six hundred sixty-one thousand, six hundred fifty".