3125945370991 has 8 divisors (see below), whose sum is σ = 3155168214000. Its totient is φ = 3096732427200.

The previous prime is 3125945370983. The next prime is 3125945370997. The reversal of 3125945370991 is 1990735495213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3125945370991 - 2³ = 3125945370983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3125945370997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1839541 + ... + 3104158.

It is an arithmetic number, because the mean of its divisors is an integer number (394396026750).

Almost surely, 2^{3125945370991} is an apocalyptic number.

3125945370991 is a deficient number, since it is larger than the sum of its proper divisors (29222843009).

3125945370991 is a wasteful number, since it uses less digits than its factorization.

3125945370991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4949609.

The product of its (nonzero) digits is 9185400, while the sum is 58.

The spelling of 3125945370991 in words is "three trillion, one hundred twenty-five billion, nine hundred forty-five million, three hundred seventy thousand, nine hundred ninety-one".