72270730281 has 8 divisors (see below), whose sum is σ = 96422317344. Its totient is φ = 48149815040.

The previous prime is 72270730277. The next prime is 72270730313. The reversal of 72270730281 is 18203707227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72270730281 - 2² = 72270730277 is a prime.

It is a super-2 number, since 2×72270730281² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72270730211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7662456 + ... + 7671881.

It is an arithmetic number, because the mean of its divisors is an integer number (12052789668).

Almost surely, 2^72270730281 is an apocalyptic number.

It is an amenable number.

72270730281 is a deficient number, since it is larger than the sum of its proper divisors (24151587063).

72270730281 is a wasteful number, since it uses less digits than its factorization.

72270730281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15335911.

The product of its (nonzero) digits is 65856, while the sum is 39.

The spelling of 72270730281 in words is "seventy-two billion, two hundred seventy million, seven hundred thirty thousand, two hundred eighty-one".