72689755774 has 4 divisors (see below), whose sum is σ = 109034633664. Its totient is φ = 36344877886.

The previous prime is 72689755763. The next prime is 72689755777. The reversal of 72689755774 is 47755798627.

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

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72689755777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18172438942 + ... + 18172438945.

It is an arithmetic number, because the mean of its divisors is an integer number (27258658416).

Almost surely, 2^72689755774 is an apocalyptic number.

72689755774 is a deficient number, since it is larger than the sum of its proper divisors (36344877890).

72689755774 is a wasteful number, since it uses less digits than its factorization.

72689755774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36344877889.

The product of its digits is 207446400, while the sum is 67.

The spelling of 72689755774 in words is "seventy-two billion, six hundred eighty-nine million, seven hundred fifty-five thousand, seven hundred seventy-four".