12051699650 has 48 divisors (see below), whose sum is σ = 23215299840. Its totient is φ = 4649198400.

The previous prime is 12051699631. The next prime is 12051699763. The reversal of 12051699650 is 5699615021.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1432757 + ... + 1441143.

It is an arithmetic number, because the mean of its divisors is an integer number (483652080).

Almost surely, 2^12051699650 is an apocalyptic number.

12051699650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12051699650 is a deficient number, since it is larger than the sum of its proper divisors (11163600190).

12051699650 is a wasteful number, since it uses less digits than its factorization.

12051699650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9419 (or 9414 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 44.

The spelling of 12051699650 in words is "twelve billion, fifty-one million, six hundred ninety-nine thousand, six hundred fifty".