17942949972 has 36 divisors (see below), whose sum is σ = 47742938880. Its totient is φ = 5666194512.

The previous prime is 17942949917. The next prime is 17942949989. The reversal of 17942949972 is 27994924971.

17942949972 is a `hidden beast` number, since 1 + 79 + 4 + 2 + 9 + 499 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13115508 + ... + 13116875.

Almost surely, 2^17942949972 is an apocalyptic number.

17942949972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

17942949972 is an abundant number, since it is smaller than the sum of its proper divisors (29799988908).

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

17942949972 is a wasteful number, since it uses less digits than its factorization.

17942949972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26232412 (or 26232407 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 63.

The spelling of 17942949972 in words is "seventeen billion, nine hundred forty-two million, nine hundred forty-nine thousand, nine hundred seventy-two".