22347479817387 has 8 divisors (see below), whose sum is σ = 33107377507280. Its totient is φ = 14898319878240.

The previous prime is 22347479817379. The next prime is 22347479817479. The reversal of 22347479817387 is 78371897474322.

It is a happy number.

22347479817387 is a `hidden beast` number, since 2 + 2 + 3 + 4 + 7 + 479 + 8 + 1 + 73 + 87 = 666.

It is not a de Polignac number, because 22347479817387 - 2³ = 22347479817379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22347479817347) 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, 413842218814 + ... + 413842218867.

It is an arithmetic number, because the mean of its divisors is an integer number (4138422188410).

Almost surely, 2^{22347479817387} is an apocalyptic number.

22347479817387 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

22347479817387 is a deficient number, since it is larger than the sum of its proper divisors (10759897689893).

22347479817387 is an equidigital number, since it uses as much as digits as its factorization.

22347479817387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827684437690 (or 827684437684 counting only the distinct ones).

The product of its digits is 796594176, while the sum is 72.

The spelling of 22347479817387 in words is "twenty-two trillion, three hundred forty-seven billion, four hundred seventy-nine million, eight hundred seventeen thousand, three hundred eighty-seven".