16961261722 has 8 divisors (see below), whose sum is σ = 25532433972. Its totient is φ = 8450450400.

The previous prime is 16961261687. The next prime is 16961261747. The reversal of 16961261722 is 22716216961.

It can be written as a sum of positive squares in 2 ways, for example, as 15755019361 + 1206242361 = 125519^2 + 34731^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15089529 + ... + 15090652.

Almost surely, 2^16961261722 is an apocalyptic number.

16961261722 is a deficient number, since it is larger than the sum of its proper divisors (8571172250).

16961261722 is a wasteful number, since it uses less digits than its factorization.

16961261722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30180464.

The product of its digits is 108864, while the sum is 43.

The spelling of 16961261722 in words is "sixteen billion, nine hundred sixty-one million, two hundred sixty-one thousand, seven hundred twenty-two".