61836666822 has 48 divisors (see below), whose sum is σ = 155057610240. Its totient is φ = 17443975536.

The previous prime is 61836666821. The next prime is 61836666823. The reversal of 61836666822 is 22866663816.

It is a happy number.

61836666822 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61836666821) and next prime (61836666823).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61836666821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3096168 + ... + 3116075.

It is an arithmetic number, because the mean of its divisors is an integer number (3230366880).

Almost surely, 2^61836666822 is an apocalyptic number.

61836666822 is an abundant number, since it is smaller than the sum of its proper divisors (93220943418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61836666822 is a wasteful number, since it uses less digits than its factorization.

61836666822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6212337 (or 6212334 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 54.

The spelling of 61836666822 in words is "sixty-one billion, eight hundred thirty-six million, six hundred sixty-six thousand, eight hundred twenty-two".