23345667978 has 16 divisors (see below), whose sum is σ = 46757951136. Its totient is φ = 7770786800.

The previous prime is 23345667937. The next prime is 23345667997. The reversal of 23345667978 is 87976654332.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2771076 + ... + 2779487.

It is an arithmetic number, because the mean of its divisors is an integer number (2922371946).

Almost surely, 2^23345667978 is an apocalyptic number.

23345667978 is an abundant number, since it is smaller than the sum of its proper divisors (23412283158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23345667978 is a wasteful number, since it uses less digits than its factorization.

23345667978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5551269.

The product of its digits is 45722880, while the sum is 60.

The spelling of 23345667978 in words is "twenty-three billion, three hundred forty-five million, six hundred sixty-seven thousand, nine hundred seventy-eight".