22415146140 has 96 divisors (see below), whose sum is σ = 64331011584. Its totient is φ = 5829753600.

The previous prime is 22415146139. The next prime is 22415146151. The reversal of 22415146140 is 4164151422.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22415146098 and 22415146107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 378417 + ... + 433623.

It is an arithmetic number, because the mean of its divisors is an integer number (670114704).

Almost surely, 2^22415146140 is an apocalyptic number.

22415146140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22415146140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32165505792).

22415146140 is an abundant number, since it is smaller than the sum of its proper divisors (41915865444).

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

22415146140 is a wasteful number, since it uses less digits than its factorization.

22415146140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55387 (or 55385 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 22415146140 its reverse (4164151422), we get a palindrome (26579297562).

The spelling of 22415146140 in words is "twenty-two billion, four hundred fifteen million, one hundred forty-six thousand, one hundred forty".