21714634620 has 72 divisors (see below), whose sum is σ = 75277404384. Its totient is φ = 4963344768.

The previous prime is 21714634619. The next prime is 21714634621. The reversal of 21714634620 is 2643641712.

21714634620 is a `hidden beast` number, since 2 + 1 + 7 + 14 + 634 + 6 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (21714634619) and next prime (21714634621).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21714634621) 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 23 ways as a sum of consecutive naturals, for example, 8615659 + ... + 8618178.

Almost surely, 2^21714634620 is an apocalyptic number.

21714634620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21714634620 is an abundant number, since it is smaller than the sum of its proper divisors (53562769764).

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

21714634620 is a wasteful number, since it uses less digits than its factorization.

21714634620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17233859 (or 17233854 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 21714634620 in words is "twenty-one billion, seven hundred fourteen million, six hundred thirty-four thousand, six hundred twenty".