21896025147 has 24 divisors (see below), whose sum is σ = 31817448000. Its totient is φ = 14509974528.

The previous prime is 21896025133. The next prime is 21896025157. The reversal of 21896025147 is 74152069812.

21896025147 is a `hidden beast` number, since 21 + 8 + 9 + 602 + 5 + 14 + 7 = 666.

It is not a de Polignac number, because 21896025147 - 2⁶ = 21896025083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21896025157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1076958 + ... + 1097100.

It is an arithmetic number, because the mean of its divisors is an integer number (1325727000).

Almost surely, 2^21896025147 is an apocalyptic number.

21896025147 is a deficient number, since it is larger than the sum of its proper divisors (9921422853).

21896025147 is a wasteful number, since it uses less digits than its factorization.

21896025147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20867 (or 20864 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 21896025147 in words is "twenty-one billion, eight hundred ninety-six million, twenty-five thousand, one hundred forty-seven".