72649011826 has 8 divisors (see below), whose sum is σ = 108974891520. Its totient is φ = 36324047988.

The previous prime is 72649011823. The next prime is 72649011871. The reversal of 72649011826 is 62811094627.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (72649011821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26235 + ... + 382081.

It is an arithmetic number, because the mean of its divisors is an integer number (13621861440).

Almost surely, 2^72649011826 is an apocalyptic number.

72649011826 is a deficient number, since it is larger than the sum of its proper divisors (36325879694).

72649011826 is a wasteful number, since it uses less digits than its factorization.

72649011826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457928.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 72649011826 in words is "seventy-two billion, six hundred forty-nine million, eleven thousand, eight hundred twenty-six".