21088133796 has 48 divisors (see below), whose sum is σ = 49520697408. Its totient is φ = 6984499200.

The previous prime is 21088133791. The next prime is 21088133797. The reversal of 21088133796 is 69733188012.

It is not an unprimeable number, because it can be changed into a prime (21088133791) 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 15 ways as a sum of consecutive naturals, for example, 1365156 + ... + 1380516.

It is an arithmetic number, because the mean of its divisors is an integer number (1031681196).

Almost surely, 2^21088133796 is an apocalyptic number.

It is an amenable number.

21088133796 is an abundant number, since it is smaller than the sum of its proper divisors (28432563612).

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

21088133796 is a wasteful number, since it uses less digits than its factorization.

21088133796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16092 (or 16090 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 21088133796 in words is "twenty-one billion, eighty-eight million, one hundred thirty-three thousand, seven hundred ninety-six".