21345514302 has 32 divisors (see below), whose sum is σ = 49616697600. Its totient is φ = 5995349568.

The previous prime is 21345514291. The next prime is 21345514319. The reversal of 21345514302 is 20341554312.

It is a self number, because there is not a number n which added to its sum of digits gives 21345514302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4304527 + ... + 4309482.

It is an arithmetic number, because the mean of its divisors is an integer number (1550521800).

Almost surely, 2^21345514302 is an apocalyptic number.

21345514302 is an abundant number, since it is smaller than the sum of its proper divisors (28271183298).

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

21345514302 is a wasteful number, since it uses less digits than its factorization.

21345514302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8614080.

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 21345514302 in words is "twenty-one billion, three hundred forty-five million, five hundred fourteen thousand, three hundred two".