72644052647203 has 4 divisors (see below), whose sum is σ = 72644095036800. Its totient is φ = 72644010257608.

The previous prime is 72644052647189. The next prime is 72644052647219. The reversal of 72644052647203 is 30274625044627.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72644052647203 - 2⁵ = 72644052647171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72644052647503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18510928 + ... + 22089421.

It is an arithmetic number, because the mean of its divisors is an integer number (18161023759200).

Almost surely, 2^{72644052647203} is an apocalyptic number.

72644052647203 is a deficient number, since it is larger than the sum of its proper divisors (42389597).

72644052647203 is a wasteful number, since it uses less digits than its factorization.

72644052647203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42389596.

The product of its (nonzero) digits is 13547520, while the sum is 52.

The spelling of 72644052647203 in words is "seventy-two trillion, six hundred forty-four billion, fifty-two million, six hundred forty-seven thousand, two hundred three".