21276853430 has 32 divisors (see below), whose sum is σ = 43775256384. Its totient is φ = 7293966336.

The previous prime is 21276853399. The next prime is 21276853463. The reversal of 21276853430 is 3435867212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 707174 + ... + 736646.

It is an arithmetic number, because the mean of its divisors is an integer number (1367976762).

Almost surely, 2^21276853430 is an apocalyptic number.

21276853430 is an abundant number, since it is smaller than the sum of its proper divisors (22498402954).

21276853430 is a wasteful number, since it uses less digits than its factorization.

21276853430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39800.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 21276853430 in words is "twenty-one billion, two hundred seventy-six million, eight hundred fifty-three thousand, four hundred thirty".