21552296148 has 36 divisors (see below), whose sum is σ = 54605273268. Its totient is φ = 7167502080.

The previous prime is 21552296081. The next prime is 21552296153. The reversal of 21552296148 is 84169225512.

21552296148 is a `hidden beast` number, since 2 + 1 + 5 + 5 + 2 + 29 + 614 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2305728324 + 19246567824 = 48018^2 + 138732^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 675723 + ... + 706898.

Almost surely, 2^21552296148 is an apocalyptic number.

It is an amenable number.

21552296148 is an abundant number, since it is smaller than the sum of its proper divisors (33052977120).

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

21552296148 is a wasteful number, since it uses less digits than its factorization.

21552296148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383064 (or 1383059 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The spelling of 21552296148 in words is "twenty-one billion, five hundred fifty-two million, two hundred ninety-six thousand, one hundred forty-eight".