2643145320 has 64 divisors (see below), whose sum is σ = 8143758720. Its totient is φ = 685787904.

The previous prime is 2643145313. The next prime is 2643145321. The reversal of 2643145320 is 235413462.

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

It is not an unprimeable number, because it can be changed into a prime (2643145321) 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, 293212 + ... + 302091.

It is an arithmetic number, because the mean of its divisors is an integer number (127246230).

Almost surely, 2^2643145320 is an apocalyptic number.

2643145320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2643145320 is an abundant number, since it is smaller than the sum of its proper divisors (5500613400).

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

2643145320 is a wasteful number, since it uses less digits than its factorization.

2643145320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595354 (or 595350 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 2643145320 is about 51411.5290572066. The cubic root of 2643145320 is about 1382.6333042383.

Adding to 2643145320 its reverse (235413462), we get a palindrome (2878558782).

The spelling of 2643145320 in words is "two billion, six hundred forty-three million, one hundred forty-five thousand, three hundred twenty".