16993259494 has 8 divisors (see below), whose sum is σ = 25742264688. Its totient is φ = 8412504600.

The previous prime is 16993259477. The next prime is 16993259497. The reversal of 16993259494 is 49495239961.

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

It is a super-2 number, since 2×16993259494² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16993259497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42062322 + ... + 42062725.

It is an arithmetic number, because the mean of its divisors is an integer number (3217783086).

Almost surely, 2^16993259494 is an apocalyptic number.

16993259494 is a deficient number, since it is larger than the sum of its proper divisors (8749005194).

16993259494 is a wasteful number, since it uses less digits than its factorization.

16993259494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84125150.

The product of its digits is 18895680, while the sum is 61.

The spelling of 16993259494 in words is "sixteen billion, nine hundred ninety-three million, two hundred fifty-nine thousand, four hundred ninety-four".