23391188146 has 4 divisors (see below), whose sum is σ = 35086782222. Its totient is φ = 11695594072.

The previous prime is 23391188143. The next prime is 23391188159. The reversal of 23391188146 is 64188119332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23100656121 + 290532025 = 151989^2 + 17045^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23391188096 and 23391188105.

It is not an unprimeable number, because it can be changed into a prime (23391188143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5847797035 + ... + 5847797038.

Almost surely, 2^23391188146 is an apocalyptic number.

23391188146 is a deficient number, since it is larger than the sum of its proper divisors (11695594076).

23391188146 is a wasteful number, since it uses less digits than its factorization.

23391188146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11695594075.

The product of its digits is 248832, while the sum is 46.

The spelling of 23391188146 in words is "twenty-three billion, three hundred ninety-one million, one hundred eighty-eight thousand, one hundred forty-six".