194194213551072 has 576 divisors, whose sum is σ = 682419209472000. Its totient is φ = 52180106711040.

The previous prime is 194194213551053. The next prime is 194194213551097. The reversal of 194194213551072 is 270155312491491.

194194213551072 is a `hidden beast` number, since 1 + 9 + 4 + 1 + 9 + 4 + 2 + 13 + 551 + 0 + 72 = 666.

It is a super-2 number, since 2×194194213551072² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2214989797 + ... + 2215077467.

It is an arithmetic number, because the mean of its divisors is an integer number (1184755572000).

Almost surely, 2^{194194213551072} is an apocalyptic number.

194194213551072 is a gapful number since it is divisible by the number (12) 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 194194213551072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341209604736000).

194194213551072 is an abundant number, since it is smaller than the sum of its proper divisors (488224995920928).

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

194194213551072 is a wasteful number, since it uses less digits than its factorization.

194194213551072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89044 (or 89019 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 194194213551072 in words is "one hundred ninety-four trillion, one hundred ninety-four billion, two hundred thirteen million, five hundred fifty-one thousand, seventy-two".