72442190791 has 8 divisors (see below), whose sum is σ = 74944573200. Its totient is φ = 69940100160.

The previous prime is 72442190771. The next prime is 72442190801. The reversal of 72442190791 is 19709124427.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72442190791 - 2⁹ = 72442190279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72442190731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511731 + ... + 637771.

It is an arithmetic number, because the mean of its divisors is an integer number (9368071650).

Almost surely, 2^72442190791 is an apocalyptic number.

72442190791 is a deficient number, since it is larger than the sum of its proper divisors (2502382409).

72442190791 is a wasteful number, since it uses less digits than its factorization.

72442190791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145889.

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 72442190791 in words is "seventy-two billion, four hundred forty-two million, one hundred ninety thousand, seven hundred ninety-one".