73388815472 has 120 divisors (see below), whose sum is σ = 174129453216. Its totient is φ = 29817790464.

The previous prime is 73388815417. The next prime is 73388815517. The reversal of 73388815472 is 27451888337.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

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, 2019608 + ... + 2055624.

Almost surely, 2^73388815472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73388815472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87064726608).

73388815472 is an abundant number, since it is smaller than the sum of its proper divisors (100740637744).

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

73388815472 is a wasteful number, since it uses less digits than its factorization.

73388815472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36175 (or 36162 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 56.

The spelling of 73388815472 in words is "seventy-three billion, three hundred eighty-eight million, eight hundred fifteen thousand, four hundred seventy-two".