16580942954 has 8 divisors (see below), whose sum is σ = 24872902308. Its totient is φ = 8289975520.

The previous prime is 16580942947. The next prime is 16580942981. The reversal of 16580942954 is 45924908561.

It can be written as a sum of positive squares in 2 ways, for example, as 15730928929 + 850014025 = 125423^2 + 29155^2 .

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

It is a super-2 number, since 2×16580942954² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16580942896 and 16580942905.

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, 204677 + ... + 273960.

Almost surely, 2^16580942954 is an apocalyptic number.

16580942954 is a deficient number, since it is larger than the sum of its proper divisors (8291959354).

16580942954 is a wasteful number, since it uses less digits than its factorization.

16580942954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495960.

The product of its (nonzero) digits is 3110400, while the sum is 53.

The spelling of 16580942954 in words is "sixteen billion, five hundred eighty million, nine hundred forty-two thousand, nine hundred fifty-four".