65131861822 has 8 divisors (see below), whose sum is σ = 97701917400. Its totient is φ = 32564556024.

The previous prime is 65131861789. The next prime is 65131861903. The reversal of 65131861822 is 22816813156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 627172 + ... + 723607.

It is an arithmetic number, because the mean of its divisors is an integer number (12212739675).

Almost surely, 2^65131861822 is an apocalyptic number.

65131861822 is a deficient number, since it is larger than the sum of its proper divisors (32570055578).

65131861822 is a wasteful number, since it uses less digits than its factorization.

65131861822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374890.

The product of its digits is 138240, while the sum is 43.

The spelling of 65131861822 in words is "sixty-five billion, one hundred thirty-one million, eight hundred sixty-one thousand, eight hundred twenty-two".