72827965869 has 16 divisors (see below), whose sum is σ = 98097303744. Its totient is φ = 48055616000.

The previous prime is 72827965867. The next prime is 72827965921. The reversal of 72827965869 is 96856972827.

It is a cyclic number.

It is not a de Polignac number, because 72827965869 - 2¹ = 72827965867 is a prime.

It is a super-2 number, since 2×72827965869² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72827965867) 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, 932989 + ... + 1008029.

It is an arithmetic number, because the mean of its divisors is an integer number (6131081484).

Almost surely, 2^72827965869 is an apocalyptic number.

It is an amenable number.

72827965869 is a deficient number, since it is larger than the sum of its proper divisors (25269337875).

72827965869 is a wasteful number, since it uses less digits than its factorization.

72827965869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78348.

The product of its digits is 182891520, while the sum is 69.

The spelling of 72827965869 in words is "seventy-two billion, eight hundred twenty-seven million, nine hundred sixty-five thousand, eight hundred sixty-nine".