23877397865 has 8 divisors (see below), whose sum is σ = 28663455048. Its totient is φ = 19094866560.

The previous prime is 23877397861. The next prime is 23877397879. The reversal of 23877397865 is 56879377832.

It can be written as a sum of positive squares in 4 ways, for example, as 3482416144 + 20394981721 = 59012^2 + 142811^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23877397865 - 2² = 23877397861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23877397861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 866546 + ... + 893675.

It is an arithmetic number, because the mean of its divisors is an integer number (3582931881).

Almost surely, 2^23877397865 is an apocalyptic number.

It is an amenable number.

23877397865 is a deficient number, since it is larger than the sum of its proper divisors (4786057183).

23877397865 is a wasteful number, since it uses less digits than its factorization.

23877397865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762939.

The product of its digits is 106686720, while the sum is 65.

The spelling of 23877397865 in words is "twenty-three billion, eight hundred seventy-seven million, three hundred ninety-seven thousand, eight hundred sixty-five".