21434314330 has 64 divisors (see below), whose sum is σ = 47297634048. Its totient is φ = 6881909760.

The previous prime is 21434314309. The next prime is 21434314379. The reversal of 21434314330 is 3341343412.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292959 + ... + 358738.

It is an arithmetic number, because the mean of its divisors is an integer number (739025532).

Almost surely, 2^21434314330 is an apocalyptic number.

21434314330 is an abundant number, since it is smaller than the sum of its proper divisors (25863319718).

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

21434314330 is a wasteful number, since it uses less digits than its factorization.

21434314330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651751.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 21434314330 its reverse (3341343412), we get a palindrome (24775657742).

The spelling of 21434314330 in words is "twenty-one billion, four hundred thirty-four million, three hundred fourteen thousand, three hundred thirty".