23447287475 has 6 divisors (see below), whose sum is σ = 29074636500. Its totient is φ = 18757829960.

The previous prime is 23447287471. The next prime is 23447287483. The reversal of 23447287475 is 57478274432.

It is a happy number.

It is not a de Polignac number, because 23447287475 - 2² = 23447287471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23447287471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 468945725 + ... + 468945774.

It is an arithmetic number, because the mean of its divisors is an integer number (4845772750).

Almost surely, 2^23447287475 is an apocalyptic number.

23447287475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

23447287475 is a deficient number, since it is larger than the sum of its proper divisors (5627349025).

23447287475 is an equidigital number, since it uses as much as digits as its factorization.

23447287475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937891509 (or 937891504 counting only the distinct ones).

The product of its digits is 10536960, while the sum is 53.

The spelling of 23447287475 in words is "twenty-three billion, four hundred forty-seven million, two hundred eighty-seven thousand, four hundred seventy-five".