22391157834 has 64 divisors (see below), whose sum is σ = 51660794880. Its totient is φ = 7181110080.

The previous prime is 22391157769. The next prime is 22391157847. The reversal of 22391157834 is 43875119322.

It is a happy number.

22391157834 is a `hidden beast` number, since 2 + 2 + 39 + 11 + 578 + 34 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 22391157834.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250944 + ... + 328260.

It is an arithmetic number, because the mean of its divisors is an integer number (807199920).

Almost surely, 2^22391157834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22391157834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25830397440).

22391157834 is an abundant number, since it is smaller than the sum of its proper divisors (29269637046).

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

22391157834 is a wasteful number, since it uses less digits than its factorization.

22391157834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77532 (or 77526 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The spelling of 22391157834 in words is "twenty-two billion, three hundred ninety-one million, one hundred fifty-seven thousand, eight hundred thirty-four".