72395491734 has 24 divisors (see below), whose sum is σ = 158091997440. Its totient is φ = 23941815408.

The previous prime is 72395491687. The next prime is 72395491739. The reversal of 72395491734 is 43719459327.

72395491734 is a `hidden beast` number, since 7 + 23 + 9 + 549 + 1 + 73 + 4 = 666.

It is a super-2 number, since 2×72395491734² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72395491739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15832249 + ... + 15836820.

It is an arithmetic number, because the mean of its divisors is an integer number (6587166560).

Almost surely, 2^72395491734 is an apocalyptic number.

72395491734 is an abundant number, since it is smaller than the sum of its proper divisors (85696505706).

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

72395491734 is a wasteful number, since it uses less digits than its factorization.

72395491734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31669204 (or 31669201 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The spelling of 72395491734 in words is "seventy-two billion, three hundred ninety-five million, four hundred ninety-one thousand, seven hundred thirty-four".