72858466547 has 4 divisors (see below), whose sum is σ = 72859580040. Its totient is φ = 72857353056.

The previous prime is 72858466537. The next prime is 72858466561. The reversal of 72858466547 is 74566485827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74566485827 = 61 ⋅1222401407.

It is a cyclic number.

It is not a de Polignac number, because 72858466547 - 2⁴ = 72858466531 is a prime.

It is a super-2 number, since 2×72858466547² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72858466547.

It is not an unprimeable number, because it can be changed into a prime (72858466507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452033 + ... + 591650.

It is an arithmetic number, because the mean of its divisors is an integer number (18214895010).

Almost surely, 2^72858466547 is an apocalyptic number.

72858466547 is a deficient number, since it is larger than the sum of its proper divisors (1113493).

72858466547 is a wasteful number, since it uses less digits than its factorization.

72858466547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113492.

The product of its digits is 90316800, while the sum is 62.

The spelling of 72858466547 in words is "seventy-two billion, eight hundred fifty-eight million, four hundred sixty-six thousand, five hundred forty-seven".