73613473472 has 224 divisors, whose sum is σ = 185492989440. Its totient is φ = 28154880000.

The previous prime is 73613473471. The next prime is 73613473481. The reversal of 73613473472 is 27437431637.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×73613473472² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73613473471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65201804 + ... + 65202932.

Almost surely, 2^73613473472 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 73613473472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92746494720).

73613473472 is an abundant number, since it is smaller than the sum of its proper divisors (111879515968).

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

73613473472 is a wasteful number, since it uses less digits than its factorization.

73613473472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391 (or 1381 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 47.

The spelling of 73613473472 in words is "seventy-three billion, six hundred thirteen million, four hundred seventy-three thousand, four hundred seventy-two".