2891206204317 has 48 divisors (see below), whose sum is σ = 4519572115968. Its totient is φ = 1843499029680.

The previous prime is 2891206204309. The next prime is 2891206204357. The reversal of 2891206204317 is 7134026021982.

2891206204317 is a `hidden beast` number, since 2 + 8 + 9 + 1 + 2 + 0 + 620 + 4 + 3 + 17 = 666.

It is not a de Polignac number, because 2891206204317 - 2³ = 2891206204309 is a prime.

It is a super-2 number, since 2×2891206204317² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2891206204307) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95685342 + ... + 95715552.

It is an arithmetic number, because the mean of its divisors is an integer number (94157752416).

Almost surely, 2^{2891206204317} is an apocalyptic number.

2891206204317 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2891206204317 is a deficient number, since it is larger than the sum of its proper divisors (1628365911651).

2891206204317 is a wasteful number, since it uses less digits than its factorization.

2891206204317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47372 (or 47360 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 2891206204317 in words is "two trillion, eight hundred ninety-one billion, two hundred six million, two hundred four thousand, three hundred seventeen".