21344849262 has 24 divisors (see below), whose sum is σ = 50451462360. Its totient is φ = 6468136080.

The previous prime is 21344849237. The next prime is 21344849269. The reversal of 21344849262 is 26294844312.

21344849262 is a `hidden beast` number, since 2 + 1 + 344 + 8 + 49 + 262 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344849269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53900937 + ... + 53901332.

It is an arithmetic number, because the mean of its divisors is an integer number (2102144265).

Almost surely, 2^21344849262 is an apocalyptic number.

21344849262 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21344849262 is an abundant number, since it is smaller than the sum of its proper divisors (29106613098).

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

21344849262 is a wasteful number, since it uses less digits than its factorization.

21344849262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107802288 (or 107802285 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The spelling of 21344849262 in words is "twenty-one billion, three hundred forty-four million, eight hundred forty-nine thousand, two hundred sixty-two".