72135261027723 has 6 divisors (see below), whose sum is σ = 96180367651284. Its totient is φ = 48090164211324.

The previous prime is 72135261027719. The next prime is 72135261027833. The reversal of 72135261027723 is 32772016253127.

It is not a de Polignac number, because 72135261027723 - 2² = 72135261027719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72135261027623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12258948 + ... + 17162526.

It is an arithmetic number, because the mean of its divisors is an integer number (16030061275214).

Almost surely, 2^{72135261027723} is an apocalyptic number.

72135261027723 is a deficient number, since it is larger than the sum of its proper divisors (24045106623561).

72135261027723 is an frugal number, since it uses more digits than its factorization.

72135261027723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9807161 (or 4903582 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 48.

The spelling of 72135261027723 in words is "seventy-two trillion, one hundred thirty-five billion, two hundred sixty-one million, twenty-seven thousand, seven hundred twenty-three".