72270550436605 has 16 divisors (see below), whose sum is σ = 87540453112320. Its totient is φ = 57272643831232.

The previous prime is 72270550436603. The next prime is 72270550436627. The reversal of 72270550436605 is 50663405507227.

It is a cyclic number.

It is not a de Polignac number, because 72270550436605 - 2¹ = 72270550436603 is a prime.

It is a super-2 number, since 2×72270550436605² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72270550436603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4817631 + ... + 12951859.

It is an arithmetic number, because the mean of its divisors is an integer number (5471278319520).

Almost surely, 2^{72270550436605} is an apocalyptic number.

It is an amenable number.

72270550436605 is a deficient number, since it is larger than the sum of its proper divisors (15269902675715).

72270550436605 is a wasteful number, since it uses less digits than its factorization.

72270550436605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8150948.

The product of its (nonzero) digits is 10584000, while the sum is 52.

The spelling of 72270550436605 in words is "seventy-two trillion, two hundred seventy billion, five hundred fifty million, four hundred thirty-six thousand, six hundred five".