72345979796 has 6 divisors (see below), whose sum is σ = 126605464650. Its totient is φ = 36172989896.

The previous prime is 72345979757. The next prime is 72345979829. The reversal of 72345979796 is 69797954327.

It can be written as a sum of positive squares in only one way, i.e., 37194979600 + 35151000196 = 192860^2 + 187486^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9043247471 + ... + 9043247478.

It is an arithmetic number, because the mean of its divisors is an integer number (21100910775).

Almost surely, 2^72345979796 is an apocalyptic number.

It is an amenable number.

72345979796 is a deficient number, since it is larger than the sum of its proper divisors (54259484854).

72345979796 is a wasteful number, since it uses less digits than its factorization.

72345979796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18086494953 (or 18086494951 counting only the distinct ones).

The product of its digits is 180033840, while the sum is 68.

The spelling of 72345979796 in words is "seventy-two billion, three hundred forty-five million, nine hundred seventy-nine thousand, seven hundred ninety-six".