17949818543104 has 528 divisors, whose sum is σ = 43422237528768. Its totient is φ = 7260985884672.

The previous prime is 17949818543087. The next prime is 17949818543131. The reversal of 17949818543104 is 40134581894971.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61262179182 + ... + 61262179474.

Almost surely, 2^{17949818543104} is an apocalyptic number.

17949818543104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17949818543104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21711118764384).

17949818543104 is an abundant number, since it is smaller than the sum of its proper divisors (25472418985664).

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

17949818543104 is an equidigital number, since it uses as much as digits as its factorization.

17949818543104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 64.

The spelling of 17949818543104 in words is "seventeen trillion, nine hundred forty-nine billion, eight hundred eighteen million, five hundred forty-three thousand, one hundred four".