23311620166 has 4 divisors (see below), whose sum is σ = 34967430252. Its totient is φ = 11655810082.

The previous prime is 23311620161. The next prime is 23311620187. The reversal of 23311620166 is 66102611332.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23311620161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5827905040 + ... + 5827905043.

It is an arithmetic number, because the mean of its divisors is an integer number (8741857563).

Almost surely, 2^23311620166 is an apocalyptic number.

23311620166 is a deficient number, since it is larger than the sum of its proper divisors (11655810086).

23311620166 is a wasteful number, since it uses less digits than its factorization.

23311620166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11655810085.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 23311620166 in words is "twenty-three billion, three hundred eleven million, six hundred twenty thousand, one hundred sixty-six".