2145312342404 has 48 divisors (see below), whose sum is σ = 4927033144320. Its totient is φ = 791844608160.

The previous prime is 2145312342379. The next prime is 2145312342409. The reversal of 2145312342404 is 4042432135412.

It is not an unprimeable number, because it can be changed into a prime (2145312342409) 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, 183291512 + ... + 183303215.

It is an arithmetic number, because the mean of its divisors is an integer number (102646523840).

Almost surely, 2^{2145312342404} is an apocalyptic number.

It is an amenable number.

2145312342404 is an abundant number, since it is smaller than the sum of its proper divisors (2781720801916).

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

2145312342404 is a wasteful number, since it uses less digits than its factorization.

2145312342404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366594768 (or 366594766 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 2145312342404 its reverse (4042432135412), we get a palindrome (6187744477816).

The spelling of 2145312342404 in words is "two trillion, one hundred forty-five billion, three hundred twelve million, three hundred forty-two thousand, four hundred four".