21434100360 has 32 divisors (see below), whose sum is σ = 64302301440. Its totient is φ = 5715760064.

The previous prime is 21434100341. The next prime is 21434100371. The reversal of 21434100360 is 6300143412.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 21434100360.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 89308632 + ... + 89308871.

It is an arithmetic number, because the mean of its divisors is an integer number (2009446920).

Almost surely, 2^21434100360 is an apocalyptic number.

21434100360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21434100360 is an abundant number, since it is smaller than the sum of its proper divisors (42868201080).

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

21434100360 is a wasteful number, since it uses less digits than its factorization.

21434100360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178617517 (or 178617513 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21434100360 its reverse (6300143412), we get a palindrome (27734243772).

The spelling of 21434100360 in words is "twenty-one billion, four hundred thirty-four million, one hundred thousand, three hundred sixty".