2126864543572 has 24 divisors (see below), whose sum is σ = 3739136581376. Its totient is φ = 1058540911488.

The previous prime is 2126864543569. The next prime is 2126864543599. The reversal of 2126864543572 is 2753454686212.

It is a super-3 number, since 3×2126864543572³ (a number of 38 digits) contains 333 as substring.

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, 7825708 + ... + 8092924.

Almost surely, 2^{2126864543572} is an apocalyptic number.

It is an amenable number.

2126864543572 is a deficient number, since it is larger than the sum of its proper divisors (1612272037804).

2126864543572 is a wasteful number, since it uses less digits than its factorization.

2126864543572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276367 (or 276365 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 55.

The spelling of 2126864543572 in words is "two trillion, one hundred twenty-six billion, eight hundred sixty-four million, five hundred forty-three thousand, five hundred seventy-two".