72660156737092 has 6 divisors (see below), whose sum is σ = 127155274289918. Its totient is φ = 36330078368544.

The previous prime is 72660156737089. The next prime is 72660156737093. The reversal of 72660156737092 is 29073765106627.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 72525389921856 + 134766815236 = 8516184^2 + 367106^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72660156737092.

It is not an unprimeable number, because it can be changed into a prime (72660156737093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9082519592133 + ... + 9082519592140.

Almost surely, 2^{72660156737092} is an apocalyptic number.

It is an amenable number.

72660156737092 is a deficient number, since it is larger than the sum of its proper divisors (54495117552826).

72660156737092 is a wasteful number, since it uses less digits than its factorization.

72660156737092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18165039184277 (or 18165039184275 counting only the distinct ones).

The product of its (nonzero) digits is 40007520, while the sum is 61.

The spelling of 72660156737092 in words is "seventy-two trillion, six hundred sixty billion, one hundred fifty-six million, seven hundred thirty-seven thousand, ninety-two".