72420727659 has 16 divisors (see below), whose sum is σ = 114160753920. Its totient is φ = 39956263200.

The previous prime is 72420727591. The next prime is 72420727681. The reversal of 72420727659 is 95672702427.

It is not a de Polignac number, because 72420727659 - 2⁹ = 72420727147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72420727459) 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, 59458117 + ... + 59459334.

It is an arithmetic number, because the mean of its divisors is an integer number (7135047120).

Almost surely, 2^72420727659 is an apocalyptic number.

72420727659 is a deficient number, since it is larger than the sum of its proper divisors (41740026261).

72420727659 is a wasteful number, since it uses less digits than its factorization.

72420727659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118917490.

The product of its (nonzero) digits is 2963520, while the sum is 51.

The spelling of 72420727659 in words is "seventy-two billion, four hundred twenty million, seven hundred twenty-seven thousand, six hundred fifty-nine".