72312141953668 has 24 divisors (see below), whose sum is σ = 129970415964312. Its totient is φ = 35177797522944.

The previous prime is 72312141953603. The next prime is 72312141953683. The reversal of 72312141953668 is 86635914121327.

It can be written as a sum of positive squares in 4 ways, for example, as 25191083741184 + 47121058212484 = 5019072^2 + 6864478^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2679205 + ... + 12320812.

It is an arithmetic number, because the mean of its divisors is an integer number (5415433998513).

Almost surely, 2^{72312141953668} is an apocalyptic number.

It is an amenable number.

72312141953668 is a deficient number, since it is larger than the sum of its proper divisors (57658274010644).

72312141953668 is a wasteful number, since it uses less digits than its factorization.

72312141953668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15032631 (or 15032629 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 58.

The spelling of 72312141953668 in words is "seventy-two trillion, three hundred twelve billion, one hundred forty-one million, nine hundred fifty-three thousand, six hundred sixty-eight".