73994215680 has 432 divisors, whose sum is σ = 319187965824. Its totient is φ = 15375237120.

The previous prime is 73994215663. The next prime is 73994215721. The reversal of 73994215680 is 8651249937.

73994215680 is a `hidden beast` number, since 7 + 3 + 99 + 421 + 56 + 80 = 666.

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, 845332 + ... + 928748.

It is an arithmetic number, because the mean of its divisors is an integer number (738861032).

It is a 1-persistent number, because it is pandigital, but 2⋅73994215680 = 147988431360 is not.

Almost surely, 2^73994215680 is an apocalyptic number.

73994215680 is a gapful number since it is divisible by the number (70) 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 73994215680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159593982912).

73994215680 is an abundant number, since it is smaller than the sum of its proper divisors (245193750144).

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

73994215680 is a wasteful number, since it uses less digits than its factorization.

73994215680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83462 (or 83445 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 73994215680 in words is "seventy-three billion, nine hundred ninety-four million, two hundred fifteen thousand, six hundred eighty".