21430714108 has 12 divisors (see below), whose sum is σ = 37509523912. Its totient is φ = 10713707280.

The previous prime is 21430714103. The next prime is 21430714133. The reversal of 21430714108 is 80141703412.

It is a self number, because there is not a number n which added to its sum of digits gives 21430714108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21430714103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382983 + ... + 435358.

Almost surely, 2^21430714108 is an apocalyptic number.

It is an amenable number.

21430714108 is a deficient number, since it is larger than the sum of its proper divisors (16078809804).

21430714108 is a wasteful number, since it uses less digits than its factorization.

21430714108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824892 (or 824890 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The spelling of 21430714108 in words is "twenty-one billion, four hundred thirty million, seven hundred fourteen thousand, one hundred eight".