21706552092 has 48 divisors (see below), whose sum is σ = 51282725760. Its totient is φ = 7145012928.

The previous prime is 21706552081. The next prime is 21706552093. The reversal of 21706552092 is 29025560712.

It is a self number, because there is not a number n which added to its sum of digits gives 21706552092.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21706552093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3067134 + ... + 3074202.

It is an arithmetic number, because the mean of its divisors is an integer number (1068390120).

Almost surely, 2^21706552092 is an apocalyptic number.

It is an amenable number.

21706552092 is an abundant number, since it is smaller than the sum of its proper divisors (29576173668).

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

21706552092 is a wasteful number, since it uses less digits than its factorization.

21706552092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10242 (or 10240 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 21706552092 in words is "twenty-one billion, seven hundred six million, five hundred fifty-two thousand, ninety-two".