23191400448 has 156 divisors (see below), whose sum is σ = 67162661488. Its totient is φ = 7710474240.

The previous prime is 23191400431. The next prime is 23191400489. The reversal of 23191400448 is 84400419132.

It is a happy number.

23191400448 is a `hidden beast` number, since 23 + 191 + 4 + 0 + 0 + 448 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 23260686 + ... + 23261682.

Almost surely, 2^23191400448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23191400448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33581330744).

23191400448 is an abundant number, since it is smaller than the sum of its proper divisors (43971261040).

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

23191400448 is an equidigital number, since it uses as much as digits as its factorization.

23191400448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658 (or 1633 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 23191400448 in words is "twenty-three billion, one hundred ninety-one million, four hundred thousand, four hundred forty-eight".