23212634978 has 16 divisors (see below), whose sum is σ = 37507779456. Its totient is φ = 10710539280.

The previous prime is 23212634971. The next prime is 23212634999. The reversal of 23212634978 is 87943621232.

It is not an unprimeable number, because it can be changed into a prime (23212634971) 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, 27818 + ... + 217253.

It is an arithmetic number, because the mean of its divisors is an integer number (2344236216).

Almost surely, 2^23212634978 is an apocalyptic number.

23212634978 is a deficient number, since it is larger than the sum of its proper divisors (14295144478).

23212634978 is a wasteful number, since it uses less digits than its factorization.

23212634978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248729.

The product of its digits is 870912, while the sum is 47.

The spelling of 23212634978 in words is "twenty-three billion, two hundred twelve million, six hundred thirty-four thousand, nine hundred seventy-eight".