2291138224785 has 24 divisors (see below), whose sum is σ = 3972414910464. Its totient is φ = 1221599262240.

The previous prime is 2291138224757. The next prime is 2291138224831. The reversal of 2291138224785 is 5874228311922.

It is a happy number.

2291138224785 is a `hidden beast` number, since 2 + 2 + 9 + 11 + 382 + 247 + 8 + 5 = 666.

It is not a de Polignac number, because 2291138224785 - 2⁷ = 2291138224657 is a prime.

It is a super-2 number, since 2×2291138224785² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6943731 + ... + 7266200.

It is an arithmetic number, because the mean of its divisors is an integer number (165517287936).

Almost surely, 2^{2291138224785} is an apocalyptic number.

It is an amenable number.

2291138224785 is a deficient number, since it is larger than the sum of its proper divisors (1681276685679).

2291138224785 is a wasteful number, since it uses less digits than its factorization.

2291138224785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14213525 (or 14213522 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 2291138224785 in words is "two trillion, two hundred ninety-one billion, one hundred thirty-eight million, two hundred twenty-four thousand, seven hundred eighty-five".