72546647726 has 16 divisors (see below), whose sum is σ = 124566610560. Its totient is φ = 31041188280.

The previous prime is 72546647713. The next prime is 72546647737. The reversal of 72546647726 is 62774664527.

It is a happy number.

It is a super-4 number, since 4×72546647726⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4177040 + ... + 4194371.

It is an arithmetic number, because the mean of its divisors is an integer number (7785413160).

Almost surely, 2^72546647726 is an apocalyptic number.

72546647726 is a deficient number, since it is larger than the sum of its proper divisors (52019962834).

72546647726 is a wasteful number, since it uses less digits than its factorization.

72546647726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8372039.

The product of its digits is 23708160, while the sum is 56.

The spelling of 72546647726 in words is "seventy-two billion, five hundred forty-six million, six hundred forty-seven thousand, seven hundred twenty-six".