72270160709 has 4 divisors (see below), whose sum is σ = 72403747500. Its totient is φ = 72136573920.

The previous prime is 72270160681. The next prime is 72270160733. The reversal of 72270160709 is 90706107227.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18413675809 + 53856484900 = 135697^2 + 232070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72270160709 is a prime.

It is a super-2 number, since 2×72270160709² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72270160789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66792584 + ... + 66793665.

It is an arithmetic number, because the mean of its divisors is an integer number (18100936875).

Almost surely, 2^72270160709 is an apocalyptic number.

It is an amenable number.

72270160709 is a deficient number, since it is larger than the sum of its proper divisors (133586791).

72270160709 is a wasteful number, since it uses less digits than its factorization.

72270160709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133586790.

The product of its (nonzero) digits is 74088, while the sum is 41.

The spelling of 72270160709 in words is "seventy-two billion, two hundred seventy million, one hundred sixty thousand, seven hundred nine".