21347680430 has 16 divisors (see below), whose sum is σ = 38428501680. Its totient is φ = 8538477312.

The previous prime is 21347680429. The next prime is 21347680439. The reversal of 21347680430 is 3408674312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21347680439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94661 + ... + 227279.

It is an arithmetic number, because the mean of its divisors is an integer number (2401781355).

Almost surely, 2^21347680430 is an apocalyptic number.

21347680430 is a deficient number, since it is larger than the sum of its proper divisors (17080821250).

21347680430 is a wasteful number, since it uses less digits than its factorization.

21347680430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148723.

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 21347680430 in words is "twenty-one billion, three hundred forty-seven million, six hundred eighty thousand, four hundred thirty".