23686193620 has 24 divisors (see below), whose sum is σ = 49899936744. Its totient is φ = 9444205056.

The previous prime is 23686193603. The next prime is 23686193621. The reversal of 23686193620 is 2639168632.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1588181904 + 22098011716 = 39852^2 + 148654^2 .

It is a super-2 number, since 2×23686193620² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23686193621) 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 in 7 ways as a sum of consecutive naturals, for example, 1885609 + ... + 1898128.

It is an arithmetic number, because the mean of its divisors is an integer number (2079164031).

Almost surely, 2^23686193620 is an apocalyptic number.

23686193620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23686193620 is an abundant number, since it is smaller than the sum of its proper divisors (26213743124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23686193620 is a wasteful number, since it uses less digits than its factorization.

23686193620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3784059 (or 3784057 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 23686193620 in words is "twenty-three billion, six hundred eighty-six million, one hundred ninety-three thousand, six hundred twenty".