73544868545 has 16 divisors (see below), whose sum is σ = 92921256000. Its totient is φ = 55725784128.

The previous prime is 73544868491. The next prime is 73544868581. The reversal of 73544868545 is 54586844537.

It is a cyclic number.

It is not a de Polignac number, because 73544868545 - 2¹⁰ = 73544867521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310226 + ... + 493284.

It is an arithmetic number, because the mean of its divisors is an integer number (5807578500).

Almost surely, 2^73544868545 is an apocalyptic number.

It is an amenable number.

73544868545 is a deficient number, since it is larger than the sum of its proper divisors (19376387455).

73544868545 is a wasteful number, since it uses less digits than its factorization.

73544868545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187312.

The product of its digits is 64512000, while the sum is 59.

The spelling of 73544868545 in words is "seventy-three billion, five hundred forty-four million, eight hundred sixty-eight thousand, five hundred forty-five".