72638074786 has 8 divisors (see below), whose sum is σ = 108958958784. Its totient is φ = 36318421860.

The previous prime is 72638074783. The next prime is 72638074819. The reversal of 72638074786 is 68747083627.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 72638074786.

It is not an unprimeable number, because it can be changed into a prime (72638074783) 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, 142510 + ... + 406921.

It is an arithmetic number, because the mean of its divisors is an integer number (13619869848).

Almost surely, 2^72638074786 is an apocalyptic number.

72638074786 is a deficient number, since it is larger than the sum of its proper divisors (36320883998).

72638074786 is a wasteful number, since it uses less digits than its factorization.

72638074786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615536.

The product of its (nonzero) digits is 18966528, while the sum is 58.

The spelling of 72638074786 in words is "seventy-two billion, six hundred thirty-eight million, seventy-four thousand, seven hundred eighty-six".