146322223640 has 16 divisors (see below), whose sum is σ = 329225003280. Its totient is φ = 58528889440.

The previous prime is 146322223633. The next prime is 146322223657. The reversal of 146322223640 is 46322223641.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 146322223640.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1829027756 + ... + 1829027835.

It is an arithmetic number, because the mean of its divisors is an integer number (20576562705).

Almost surely, 2^146322223640 is an apocalyptic number.

146322223640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

146322223640 is an abundant number, since it is smaller than the sum of its proper divisors (182902779640).

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

146322223640 is a wasteful number, since it uses less digits than its factorization.

146322223640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3658055602 (or 3658055598 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 35.

Subtracting from 146322223640 its reverse (46322223641), we obtain a palindrome (99999999999).

The spelling of 146322223640 in words is "one hundred forty-six billion, three hundred twenty-two million, two hundred twenty-three thousand, six hundred forty".