27720073860745 has 16 divisors (see below), whose sum is σ = 38106400843008. Its totient is φ = 18962900873280.

The previous prime is 27720073860727. The next prime is 27720073860763. The reversal of 27720073860745 is 54706837002772.

It is an interprime number because it is at equal distance from previous prime (27720073860727) and next prime (27720073860763).

It is not a de Polignac number, because 27720073860745 - 2⁹ = 27720073860233 is a prime.

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 27720073860745.

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, 940605349 + ... + 940634818.

It is an arithmetic number, because the mean of its divisors is an integer number (2381650052688).

Almost surely, 2^{27720073860745} is an apocalyptic number.

It is an amenable number.

27720073860745 is a deficient number, since it is larger than the sum of its proper divisors (10386326982263).

27720073860745 is a wasteful number, since it uses less digits than its factorization.

27720073860745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881240600.

The product of its (nonzero) digits is 27659520, while the sum is 58.

The spelling of 27720073860745 in words is "twenty-seven trillion, seven hundred twenty billion, seventy-three million, eight hundred sixty thousand, seven hundred forty-five".