72490123608 has 32 divisors (see below), whose sum is σ = 207114639360. Its totient is φ = 20711463840.

The previous prime is 72490123591. The next prime is 72490123609. The reversal of 72490123608 is 80632109427.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 72490123608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72490123609) 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, 215744248 + ... + 215744583.

It is an arithmetic number, because the mean of its divisors is an integer number (6472332480).

Almost surely, 2^72490123608 is an apocalyptic number.

It is an amenable number.

72490123608 is an abundant number, since it is smaller than the sum of its proper divisors (134624515752).

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

72490123608 is a wasteful number, since it uses less digits than its factorization.

72490123608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431488847 (or 431488843 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 72490123608 in words is "seventy-two billion, four hundred ninety million, one hundred twenty-three thousand, six hundred eight".