72555853610859 has 4 divisors (see below), whose sum is σ = 96741138147816. Its totient is φ = 48370569073904.

The previous prime is 72555853610839. The next prime is 72555853610881. The reversal of 72555853610859 is 95801635855527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72555853610859 - 2¹¹ = 72555853608811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72555853610793 and 72555853610802.

It is not an unprimeable number, because it can be changed into a prime (72555853610839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12092642268474 + ... + 12092642268479.

It is an arithmetic number, because the mean of its divisors is an integer number (24185284536954).

Almost surely, 2^{72555853610859} is an apocalyptic number.

72555853610859 is a deficient number, since it is larger than the sum of its proper divisors (24185284536957).

72555853610859 is a wasteful number, since it uses less digits than its factorization.

72555853610859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24185284536956.

The product of its (nonzero) digits is 453600000, while the sum is 69.

The spelling of 72555853610859 in words is "seventy-two trillion, five hundred fifty-five billion, eight hundred fifty-three million, six hundred ten thousand, eight hundred fifty-nine".