81074234022 has 32 divisors (see below), whose sum is σ = 166146664320. Its totient is φ = 26358722880.

The previous prime is 81074234009. The next prime is 81074234023. The reversal of 81074234022 is 22043247018.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81074234023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 947673 + ... + 1029675.

It is an arithmetic number, because the mean of its divisors is an integer number (5192083260).

Almost surely, 2^81074234022 is an apocalyptic number.

81074234022 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

81074234022 is an abundant number, since it is smaller than the sum of its proper divisors (85072430298).

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

81074234022 is a wasteful number, since it uses less digits than its factorization.

81074234022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86068.

The product of its (nonzero) digits is 21504, while the sum is 33.

The spelling of 81074234022 in words is "eighty-one billion, seventy-four million, two hundred thirty-four thousand, twenty-two".