23278178056 has 32 divisors (see below), whose sum is σ = 50065908480. Its totient is φ = 9939542400.

The previous prime is 23278178009. The next prime is 23278178059. The reversal of 23278178056 is 65087187232.

It is not an unprimeable number, because it can be changed into a prime (23278178059) by changing a digit.

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, 751765 + ... + 782116.

It is an arithmetic number, because the mean of its divisors is an integer number (1564559640).

Almost surely, 2^23278178056 is an apocalyptic number.

It is an amenable number.

23278178056 is an abundant number, since it is smaller than the sum of its proper divisors (26787730424).

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

23278178056 is a wasteful number, since it uses less digits than its factorization.

23278178056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534165 (or 1534161 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 23278178056 in words is "twenty-three billion, two hundred seventy-eight million, one hundred seventy-eight thousand, fifty-six".