23085979440 has 80 divisors (see below), whose sum is σ = 72574569216. Its totient is φ = 6069548800.

The previous prime is 23085979409. The next prime is 23085979459. The reversal of 23085979440 is 4497958032.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660366 + ... + 694445.

Almost surely, 2^23085979440 is an apocalyptic number.

23085979440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23085979440 is an abundant number, since it is smaller than the sum of its proper divisors (49488589776).

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

23085979440 is a wasteful number, since it uses less digits than its factorization.

23085979440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354898 (or 1354892 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 23085979440 in words is "twenty-three billion, eighty-five million, nine hundred seventy-nine thousand, four hundred forty".