123820005822 has 64 divisors (see below), whose sum is σ = 265848500736. Its totient is φ = 38350231040.

The previous prime is 123820005797. The next prime is 123820005893. The reversal of 123820005822 is 228500028321.

It is a super-2 number, since 2×123820005822² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1271353 + ... + 1365275.

It is an arithmetic number, because the mean of its divisors is an integer number (4153882824).

Almost surely, 2^123820005822 is an apocalyptic number.

123820005822 is an abundant number, since it is smaller than the sum of its proper divisors (142028494914).

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

123820005822 is a wasteful number, since it uses less digits than its factorization.

123820005822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94225.

The product of its (nonzero) digits is 15360, while the sum is 33.

The spelling of 123820005822 in words is "one hundred twenty-three billion, eight hundred twenty million, five thousand, eight hundred twenty-two".