72381733307 has 4 divisors (see below), whose sum is σ = 77949558960. Its totient is φ = 66813907656.

The previous prime is 72381733261. The next prime is 72381733321. The reversal of 72381733307 is 70333718327.

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 72381733307 - 2¹⁸ = 72381471163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72381733607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2783912807 + ... + 2783912832.

It is an arithmetic number, because the mean of its divisors is an integer number (19487389740).

Almost surely, 2^72381733307 is an apocalyptic number.

72381733307 is a deficient number, since it is larger than the sum of its proper divisors (5567825653).

72381733307 is a wasteful number, since it uses less digits than its factorization.

72381733307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5567825652.

The product of its (nonzero) digits is 444528, while the sum is 44.

The spelling of 72381733307 in words is "seventy-two billion, three hundred eighty-one million, seven hundred thirty-three thousand, three hundred seven".