16630215261 has 16 divisors (see below), whose sum is σ = 24207164928. Its totient is φ = 10071518000.

The previous prime is 16630215247. The next prime is 16630215281. The reversal of 16630215261 is 16251203661.

It is a cyclic number.

It is not a de Polignac number, because 16630215261 - 2⁶ = 16630215197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16630215211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139215 + ... + 229436.

It is an arithmetic number, because the mean of its divisors is an integer number (1512947808).

Almost surely, 2^16630215261 is an apocalyptic number.

16630215261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16630215261 is a deficient number, since it is larger than the sum of its proper divisors (7576949667).

16630215261 is a wasteful number, since it uses less digits than its factorization.

16630215261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370032.

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 16630215261 in words is "sixteen billion, six hundred thirty million, two hundred fifteen thousand, two hundred sixty-one".