16656213145 has 32 divisors (see below), whose sum is σ = 23528413440. Its totient is φ = 11159581440.

The previous prime is 16656213113. The next prime is 16656213173. The reversal of 16656213145 is 54131265661.

It is a happy number.

It is not a de Polignac number, because 16656213145 - 2⁵ = 16656213113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16656213098 and 16656213107.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 341052 + ... + 386818.

It is an arithmetic number, because the mean of its divisors is an integer number (735262920).

Almost surely, 2^16656213145 is an apocalyptic number.

It is an amenable number.

16656213145 is a deficient number, since it is larger than the sum of its proper divisors (6872200295).

16656213145 is a wasteful number, since it uses less digits than its factorization.

16656213145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46305.

The product of its digits is 129600, while the sum is 40.

The spelling of 16656213145 in words is "sixteen billion, six hundred fifty-six million, two hundred thirteen thousand, one hundred forty-five".