72974377718 has 32 divisors (see below), whose sum is σ = 133091475840. Its totient is φ = 29575877760.

The previous prime is 72974377643. The next prime is 72974377741. The reversal of 72974377718 is 81777347927.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5127596 + ... + 5141807.

It is an arithmetic number, because the mean of its divisors is an integer number (4159108620).

Almost surely, 2^72974377718 is an apocalyptic number.

72974377718 is a deficient number, since it is larger than the sum of its proper divisors (60117098122).

72974377718 is a wasteful number, since it uses less digits than its factorization.

72974377718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10269452.

The product of its digits is 29042496, while the sum is 62.

The spelling of 72974377718 in words is "seventy-two billion, nine hundred seventy-four million, three hundred seventy-seven thousand, seven hundred eighteen".