21160777304 has 32 divisors (see below), whose sum is σ = 41053327200. Its totient is φ = 10213378560.

The previous prime is 21160777303. The next prime is 21160777349. The reversal of 21160777304 is 40377706112.

It is a super-3 number, since 3×21160777304³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21160777303) 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 7 ways as a sum of consecutive naturals, for example, 1869149 + ... + 1880435.

It is an arithmetic number, because the mean of its divisors is an integer number (1282916475).

Almost surely, 2^21160777304 is an apocalyptic number.

It is an amenable number.

21160777304 is a deficient number, since it is larger than the sum of its proper divisors (19892549896).

21160777304 is a wasteful number, since it uses less digits than its factorization.

21160777304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19403 (or 19399 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 38.

The spelling of 21160777304 in words is "twenty-one billion, one hundred sixty million, seven hundred seventy-seven thousand, three hundred four".