2150664204340 has 48 divisors (see below), whose sum is σ = 4797715507200. Its totient is φ = 807511565952.

The previous prime is 2150664204307. The next prime is 2150664204341. The reversal of 2150664204340 is 434024660512.

It is a self number, because there is not a number n which added to its sum of digits gives 2150664204340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2150664204341) 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, 25920244 + ... + 26003083.

It is an arithmetic number, because the mean of its divisors is an integer number (99952406400).

Almost surely, 2^{2150664204340} is an apocalyptic number.

2150664204340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2150664204340 is an abundant number, since it is smaller than the sum of its proper divisors (2647051302860).

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

2150664204340 is a wasteful number, since it uses less digits than its factorization.

2150664204340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51923464 (or 51923462 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 2150664204340 its reverse (434024660512), we get a palindrome (2584688864852).

The spelling of 2150664204340 in words is "two trillion, one hundred fifty billion, six hundred sixty-four million, two hundred four thousand, three hundred forty".