23642689753 has 4 divisors (see below), whose sum is σ = 23649524388. Its totient is φ = 23635855120.

The previous prime is 23642689751. The next prime is 23642689771. The reversal of 23642689753 is 35798624632.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5182848064 + 18459841689 = 71992^2 + 135867^2 .

It is a cyclic number.

It is not a de Polignac number, because 23642689753 - 2¹ = 23642689751 is a prime.

It is a super-2 number, since 2×23642689753² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23642689694 and 23642689703.

It is not an unprimeable number, because it can be changed into a prime (23642689751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3412126 + ... + 3419047.

It is an arithmetic number, because the mean of its divisors is an integer number (5912381097).

Almost surely, 2^23642689753 is an apocalyptic number.

It is an amenable number.

23642689753 is a deficient number, since it is larger than the sum of its proper divisors (6834635).

23642689753 is an equidigital number, since it uses as much as digits as its factorization.

23642689753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6834634.

The product of its digits is 13063680, while the sum is 55.

The spelling of 23642689753 in words is "twenty-three billion, six hundred forty-two million, six hundred eighty-nine thousand, seven hundred fifty-three".