173974389768 has 96 divisors (see below), whose sum is σ = 480499358040. Its totient is φ = 56846499840.

The previous prime is 173974389739. The next prime is 173974389773. The reversal of 173974389768 is 867983479371.

173974389768 is a `hidden beast` number, since 17 + 3 + 97 + 438 + 97 + 6 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 137301373764 + 36673016004 = 370542^2 + 191502^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 173974389696 and 173974389705.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4380078 + ... + 4419618.

Almost surely, 2^173974389768 is an apocalyptic number.

173974389768 is a gapful number since it is divisible by the number (18) 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 173974389768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240249679020).

173974389768 is an abundant number, since it is smaller than the sum of its proper divisors (306524968272).

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

173974389768 is a wasteful number, since it uses less digits than its factorization.

173974389768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40759 (or 40752 counting only the distinct ones).

The product of its digits is 384072192, while the sum is 72.

The spelling of 173974389768 in words is "one hundred seventy-three billion, nine hundred seventy-four million, three hundred eighty-nine thousand, seven hundred sixty-eight".