23621216078 has 4 divisors (see below), whose sum is σ = 35431824120. Its totient is φ = 11810608038.

The previous prime is 23621216077. The next prime is 23621216093. The reversal of 23621216078 is 87061212632.

It is a happy number.

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 (23621216071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5905304018 + ... + 5905304021.

It is an arithmetic number, because the mean of its divisors is an integer number (8857956030).

Almost surely, 2^23621216078 is an apocalyptic number.

23621216078 is a deficient number, since it is larger than the sum of its proper divisors (11810608042).

23621216078 is a wasteful number, since it uses less digits than its factorization.

23621216078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11810608041.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 23621216078 in words is "twenty-three billion, six hundred twenty-one million, two hundred sixteen thousand, seventy-eight".