23678435237 has 4 divisors (see below), whose sum is σ = 24125198220. Its totient is φ = 23231672256.

The previous prime is 23678435191. The next prime is 23678435257. The reversal of 23678435237 is 73253487632.

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 11437446916 + 12240988321 = 106946^2 + 110639^2 .

It is a cyclic number.

It is not a de Polignac number, because 23678435237 - 2²⁶ = 23611326373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23678435257) 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, 223381412 + ... + 223381517.

It is an arithmetic number, because the mean of its divisors is an integer number (6031299555).

Almost surely, 2^23678435237 is an apocalyptic number.

It is an amenable number.

23678435237 is a deficient number, since it is larger than the sum of its proper divisors (446762983).

23678435237 is an equidigital number, since it uses as much as digits as its factorization.

23678435237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446762982.

The product of its digits is 5080320, while the sum is 50.

The spelling of 23678435237 in words is "twenty-three billion, six hundred seventy-eight million, four hundred thirty-five thousand, two hundred thirty-seven".