72942448786 has 4 divisors (see below), whose sum is σ = 109413673182. Its totient is φ = 36471224392.

The previous prime is 72942448783. The next prime is 72942448801. The reversal of 72942448786 is 68784424927.

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

It can be written as a sum of positive squares in only one way, i.e., 71489390625 + 1453058161 = 267375^2 + 38119^2 .

It is not an unprimeable number, because it can be changed into a prime (72942448781) 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 as a sum of consecutive naturals, namely, 18235612195 + ... + 18235612198.

Almost surely, 2^72942448786 is an apocalyptic number.

72942448786 is a deficient number, since it is larger than the sum of its proper divisors (36471224396).

72942448786 is a wasteful number, since it uses less digits than its factorization.

72942448786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36471224395.

The product of its digits is 43352064, while the sum is 61.

The spelling of 72942448786 in words is "seventy-two billion, nine hundred forty-two million, four hundred forty-eight thousand, seven hundred eighty-six".