17993354064 has 80 divisors (see below), whose sum is σ = 56248149888. Its totient is φ = 4838547456.

The previous prime is 17993354063. The next prime is 17993354069. The reversal of 17993354064 is 46045339971.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 17993353998 and 17993354016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17993354063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1569337 + ... + 1580760.

Almost surely, 2^17993354064 is an apocalyptic number.

17993354064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

17993354064 is an abundant number, since it is smaller than the sum of its proper divisors (38254795824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17993354064 is a wasteful number, since it uses less digits than its factorization.

17993354064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3150132 (or 3150126 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 51.

The spelling of 17993354064 in words is "seventeen billion, nine hundred ninety-three million, three hundred fifty-four thousand, sixty-four".