2128226158268 has 24 divisors (see below), whose sum is σ = 4256671944672. Its totient is φ = 912049861824.

The previous prime is 2128226158229. The next prime is 2128226158307. The reversal of 2128226158268 is 8628516228212.

It is an interprime number because it is at equal distance from previous prime (2128226158229) and next prime (2128226158307).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1405871 + ... + 2496582.

It is an arithmetic number, because the mean of its divisors is an integer number (177361331028).

Almost surely, 2^{2128226158268} is an apocalyptic number.

2128226158268 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2128226158268 is an abundant number, since it is smaller than the sum of its proper divisors (2128445786404).

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

2128226158268 is a wasteful number, since it uses less digits than its factorization.

2128226158268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3921941 (or 3921939 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 53.

The spelling of 2128226158268 in words is "two trillion, one hundred twenty-eight billion, two hundred twenty-six million, one hundred fifty-eight thousand, two hundred sixty-eight".