65671800523 has 6 divisors (see below), whose sum is σ = 76393727196. Its totient is φ = 56290114692.

The previous prime is 65671800521. The next prime is 65671800541. The reversal of 65671800523 is 32500817656.

65671800523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65671800523 - 2¹ = 65671800521 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 65671800523.

It is not an unprimeable number, because it can be changed into a prime (65671800521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 670120365 + ... + 670120462.

It is an arithmetic number, because the mean of its divisors is an integer number (12732287866).

Almost surely, 2^65671800523 is an apocalyptic number.

65671800523 is a deficient number, since it is larger than the sum of its proper divisors (10721926673).

65671800523 is a wasteful number, since it uses less digits than its factorization.

65671800523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340240841 (or 1340240834 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 65671800523 in words is "sixty-five billion, six hundred seventy-one million, eight hundred thousand, five hundred twenty-three".