72420666750720 has 216 divisors, whose sum is σ = 250601755268592. Its totient is φ = 19309573324800.

The previous prime is 72420666750689. The next prime is 72420666750767. The reversal of 72420666750720 is 2705766602427.

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, 85760955 + ... + 86601285.

Almost surely, 2^{72420666750720} 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 72420666750720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125300877634296).

72420666750720 is an abundant number, since it is smaller than the sum of its proper divisors (178181088517872).

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

72420666750720 is a wasteful number, since it uses less digits than its factorization.

72420666750720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847839 (or 847822 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 54.

The spelling of 72420666750720 in words is "seventy-two trillion, four hundred twenty billion, six hundred sixty-six million, seven hundred fifty thousand, seven hundred twenty".