16580961962 has 4 divisors (see below), whose sum is σ = 24871442946. Its totient is φ = 8290480980.

The previous prime is 16580961949. The next prime is 16580961977. The reversal of 16580961962 is 26916908561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11515650721 + 5065311241 = 107311^2 + 71171^2 .

It is a super-3 number, since 3×16580961962³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4145240489 + ... + 4145240492.

Almost surely, 2^16580961962 is an apocalyptic number.

16580961962 is a deficient number, since it is larger than the sum of its proper divisors (8290480984).

16580961962 is an equidigital number, since it uses as much as digits as its factorization.

16580961962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8290480983.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 16580961962 in words is "sixteen billion, five hundred eighty million, nine hundred sixty-one thousand, nine hundred sixty-two".