16151000661 has 6 divisors (see below), whose sum is σ = 23329223190. Its totient is φ = 10767333768.

The previous prime is 16151000641. The next prime is 16151000669. The reversal of 16151000661 is 16600015161.

It can be written as a sum of positive squares in only one way, i.e., 9723932100 + 6427068561 = 98610^2 + 80169^2 .

It is not a de Polignac number, because 16151000661 - 2⁵ = 16151000629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16151000669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 897277806 + ... + 897277823.

It is an arithmetic number, because the mean of its divisors is an integer number (3888203865).

Almost surely, 2^16151000661 is an apocalyptic number.

It is an amenable number.

16151000661 is a deficient number, since it is larger than the sum of its proper divisors (7178222529).

16151000661 is a wasteful number, since it uses less digits than its factorization.

16151000661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794555635 (or 1794555632 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The spelling of 16151000661 in words is "sixteen billion, one hundred fifty-one million, six hundred sixty-one", and thus it is an aban number.