16561950030 has 24 divisors (see below), whose sum is σ = 43061070312. Its totient is φ = 4416519984.

The previous prime is 16561950029. The next prime is 16561950037. The reversal of 16561950030 is 3005916561.

16561950030 is a `hidden beast` number, since 1 + 6 + 5 + 619 + 5 + 0 + 0 + 30 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16561950037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92010744 + ... + 92010923.

It is an arithmetic number, because the mean of its divisors is an integer number (1794211263).

Almost surely, 2^16561950030 is an apocalyptic number.

16561950030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16561950030 is an abundant number, since it is smaller than the sum of its proper divisors (26499120282).

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

16561950030 is a wasteful number, since it uses less digits than its factorization.

16561950030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184021680 (or 184021677 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The spelling of 16561950030 in words is "sixteen billion, five hundred sixty-one million, nine hundred fifty thousand, thirty".