2145344511522 has 32 divisors (see below), whose sum is σ = 4431939932160. Its totient is φ = 691602618960.

The previous prime is 2145344511469. The next prime is 2145344511523. The reversal of 2145344511522 is 2251154435412.

It is not an unprimeable number, because it can be changed into a prime (2145344511523) 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, 3409228 + ... + 3989175.

It is an arithmetic number, because the mean of its divisors is an integer number (138498122880).

Almost surely, 2^{2145344511522} is an apocalyptic number.

2145344511522 is an abundant number, since it is smaller than the sum of its proper divisors (2286595420638).

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

2145344511522 is a wasteful number, since it uses less digits than its factorization.

2145344511522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7399998.

The product of its digits is 192000, while the sum is 39.

Adding to 2145344511522 its reverse (2251154435412), we get a palindrome (4396498946934).

The spelling of 2145344511522 in words is "two trillion, one hundred forty-five billion, three hundred forty-four million, five hundred eleven thousand, five hundred twenty-two".