17942061815 has 8 divisors (see below), whose sum is σ = 21531819168. Its totient is φ = 14352752800.

The previous prime is 17942061811. The next prime is 17942061827. The reversal of 17942061815 is 51816024971.

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

It is not a de Polignac number, because 17942061815 - 2² = 17942061811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17942061811) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 16652 + ... + 190161.

It is an arithmetic number, because the mean of its divisors is an integer number (2691477396).

Almost surely, 2^17942061815 is an apocalyptic number.

17942061815 is a deficient number, since it is larger than the sum of its proper divisors (3589757353).

17942061815 is a wasteful number, since it uses less digits than its factorization.

17942061815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224169.

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 17942061815 in words is "seventeen billion, nine hundred forty-two million, sixty-one thousand, eight hundred fifteen".