72040644010 has 16 divisors (see below), whose sum is σ = 129702398976. Its totient is φ = 28809759888.

The previous prime is 72040643977. The next prime is 72040644019. The reversal of 72040644010 is 1044604027.

It is a self number, because there is not a number n which added to its sum of digits gives 72040644010.

It is not an unprimeable number, because it can be changed into a prime (72040644019) 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, 765522 + ... + 854461.

It is an arithmetic number, because the mean of its divisors is an integer number (8106399936).

Almost surely, 2^72040644010 is an apocalyptic number.

72040644010 is a deficient number, since it is larger than the sum of its proper divisors (57661754966).

72040644010 is a wasteful number, since it uses less digits than its factorization.

72040644010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624437.

The product of its (nonzero) digits is 5376, while the sum is 28.

The spelling of 72040644010 in words is "seventy-two billion, forty million, six hundred forty-four thousand, ten".