81950941422 has 48 divisors (see below), whose sum is σ = 203574564960. Its totient is φ = 23339736576.

The previous prime is 81950941351. The next prime is 81950941427. The reversal of 81950941422 is 22414905918.

It is a happy number.

81950941422 is a `hidden beast` number, since 81 + 9 + 509 + 41 + 4 + 22 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81950941427) 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, 999547 + ... + 1078422.

It is an arithmetic number, because the mean of its divisors is an integer number (4241136770).

Almost surely, 2^81950941422 is an apocalyptic number.

81950941422 is an abundant number, since it is smaller than the sum of its proper divisors (121623623538).

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

81950941422 is a wasteful number, since it uses less digits than its factorization.

81950941422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078297 (or 2078294 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 81950941422 in words is "eighty-one billion, nine hundred fifty million, nine hundred forty-one thousand, four hundred twenty-two".