72505732026 has 32 divisors (see below), whose sum is σ = 178475649408. Its totient is φ = 19122390720.

The previous prime is 72505732007. The next prime is 72505732027. The reversal of 72505732026 is 62023750527.

It is a super-2 number, since 2×72505732026² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (72505732027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66396645 + ... + 66397736.

It is an arithmetic number, because the mean of its divisors is an integer number (5577364044).

Almost surely, 2^72505732026 is an apocalyptic number.

72505732026 is an abundant number, since it is smaller than the sum of its proper divisors (105969917382).

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

72505732026 is a wasteful number, since it uses less digits than its factorization.

72505732026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132794406.

The product of its (nonzero) digits is 176400, while the sum is 39.

The spelling of 72505732026 in words is "seventy-two billion, five hundred five million, seven hundred thirty-two thousand, twenty-six".