72423667770 has 32 divisors (see below), whose sum is σ = 173824005888. Its totient is φ = 19312177728.

The previous prime is 72423667751. The next prime is 72423667859. The reversal of 72423667770 is 7776632427.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1189407 + ... + 1248813.

It is an arithmetic number, because the mean of its divisors is an integer number (5432000184).

Almost surely, 2^72423667770 is an apocalyptic number.

72423667770 is an abundant number, since it is smaller than the sum of its proper divisors (101400338118).

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

72423667770 is a wasteful number, since it uses less digits than its factorization.

72423667770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100054.

The product of its (nonzero) digits is 4148928, while the sum is 51.

The spelling of 72423667770 in words is "seventy-two billion, four hundred twenty-three million, six hundred sixty-seven thousand, seven hundred seventy".