21339849762 has 96 divisors (see below), whose sum is σ = 60179250240. Its totient is φ = 5542810560.

The previous prime is 21339849737. The next prime is 21339849763. The reversal of 21339849762 is 26794893312.

21339849762 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 98 + 497 + 62 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 21339849699 and 21339849708.

It is not an unprimeable number, because it can be changed into a prime (21339849763) 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 47 ways as a sum of consecutive naturals, for example, 337483 + ... + 395694.

It is an arithmetic number, because the mean of its divisors is an integer number (626867190).

Almost surely, 2^21339849762 is an apocalyptic number.

21339849762 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21339849762 is an abundant number, since it is smaller than the sum of its proper divisors (38839400478).

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

21339849762 is a wasteful number, since it uses less digits than its factorization.

21339849762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733213 (or 733200 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The spelling of 21339849762 in words is "twenty-one billion, three hundred thirty-nine million, eight hundred forty-nine thousand, seven hundred sixty-two".