2861358032991 has 8 divisors (see below), whose sum is σ = 3946700735280. Its totient is φ = 1841793676352.

The previous prime is 2861358032989. The next prime is 2861358033013. The reversal of 2861358032991 is 1992308531682.

It is a happy number.

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 2861358032991 - 2¹ = 2861358032989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861358032921) 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, 16444586310 + ... + 16444586483.

It is an arithmetic number, because the mean of its divisors is an integer number (493337591910).

Almost surely, 2^{2861358032991} is an apocalyptic number.

2861358032991 is a deficient number, since it is larger than the sum of its proper divisors (1085342702289).

2861358032991 is a wasteful number, since it uses less digits than its factorization.

2861358032991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32889172825.

The product of its (nonzero) digits is 5598720, while the sum is 57.

The spelling of 2861358032991 in words is "two trillion, eight hundred sixty-one billion, three hundred fifty-eight million, thirty-two thousand, nine hundred ninety-one".