73378021080 has 256 divisors, whose sum is σ = 271143936000. Its totient is φ = 15469977600.

The previous prime is 73378021061. The next prime is 73378021097. The reversal of 73378021080 is 8012087337.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26195680 + ... + 26198480.

It is an arithmetic number, because the mean of its divisors is an integer number (1059156000).

Almost surely, 2^73378021080 is an apocalyptic number.

73378021080 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 73378021080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135571968000).

73378021080 is an abundant number, since it is smaller than the sum of its proper divisors (197765914920).

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

73378021080 is a wasteful number, since it uses less digits than its factorization.

73378021080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5234 (or 5230 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The spelling of 73378021080 in words is "seventy-three billion, three hundred seventy-eight million, twenty-one thousand, eighty".