73213673472 has 220 divisors, whose sum is σ = 219244606416. Its totient is φ = 24347934720.

The previous prime is 73213673471. The next prime is 73213673479. The reversal of 73213673472 is 27437631237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73213673471) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 169869097 + ... + 169869527.

Almost surely, 2^73213673472 is an apocalyptic number.

73213673472 is a gapful number since it is divisible by the number (72) 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 73213673472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109622303208).

73213673472 is an abundant number, since it is smaller than the sum of its proper divisors (146030932944).

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

73213673472 is an frugal number, since it uses more digits than its factorization.

73213673472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 436 counting only the distinct ones).

The product of its digits is 889056, while the sum is 45.

The spelling of 73213673472 in words is "seventy-three billion, two hundred thirteen million, six hundred seventy-three thousand, four hundred seventy-two".