21424758246 has 24 divisors (see below), whose sum is σ = 46655953344. Its totient is φ = 7105333200.

The previous prime is 21424758197. The next prime is 21424758253. The reversal of 21424758246 is 64285742412.

21424758246 is a `hidden beast` number, since 2 + 1 + 4 + 24 + 7 + 582 + 46 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3017430 + ... + 3024521.

It is an arithmetic number, because the mean of its divisors is an integer number (1943998056).

Almost surely, 2^21424758246 is an apocalyptic number.

21424758246 is an abundant number, since it is smaller than the sum of its proper divisors (25231195098).

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

21424758246 is a wasteful number, since it uses less digits than its factorization.

21424758246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6042156 (or 6042153 counting only the distinct ones).

The product of its digits is 860160, while the sum is 45.

The spelling of 21424758246 in words is "twenty-one billion, four hundred twenty-four million, seven hundred fifty-eight thousand, two hundred forty-six".