2043291125691 has 96 divisors (see below), whose sum is σ = 3189562521600. Its totient is φ = 1258169552640.

The previous prime is 2043291125671. The next prime is 2043291125767. The reversal of 2043291125691 is 1965211923402.

It is a happy number.

2043291125691 is a `hidden beast` number, since 2 + 0 + 432 + 9 + 1 + 125 + 6 + 91 = 666.

It is not a de Polignac number, because 2043291125691 - 2³⁹ = 1493535311803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2043291125611) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 84257730 + ... + 84281976.

It is an arithmetic number, because the mean of its divisors is an integer number (33224609600).

Almost surely, 2^{2043291125691} is an apocalyptic number.

2043291125691 is a deficient number, since it is larger than the sum of its proper divisors (1146271395909).

2043291125691 is a wasteful number, since it uses less digits than its factorization.

2043291125691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24489 (or 24486 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 2043291125691 in words is "two trillion, forty-three billion, two hundred ninety-one million, one hundred twenty-five thousand, six hundred ninety-one".