16516615650 has 48 divisors (see below), whose sum is σ = 40970856864. Its totient is φ = 4403393280.

The previous prime is 16516615607. The next prime is 16516615669. The reversal of 16516615650 is 5651661561.

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, 791754 + ... + 812346.

It is an arithmetic number, because the mean of its divisors is an integer number (853559518).

Almost surely, 2^16516615650 is an apocalyptic number.

16516615650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16516615650 is an abundant number, since it is smaller than the sum of its proper divisors (24454241214).

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

16516615650 is a wasteful number, since it uses less digits than its factorization.

16516615650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25955 (or 25950 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 16516615650 in words is "sixteen billion, five hundred sixteen million, six hundred fifteen thousand, six hundred fifty".