21498469510 has 16 divisors (see below), whose sum is σ = 44225423136. Its totient is φ = 7370903808.

The previous prime is 21498469507. The next prime is 21498469519. The reversal of 21498469510 is 1596489412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21498469519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153560427 + ... + 153560566.

It is an arithmetic number, because the mean of its divisors is an integer number (2764088946).

Almost surely, 2^21498469510 is an apocalyptic number.

21498469510 is an abundant number, since it is smaller than the sum of its proper divisors (22726953626).

21498469510 is a wasteful number, since it uses less digits than its factorization.

21498469510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307121007.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 21498469510 in words is "twenty-one billion, four hundred ninety-eight million, four hundred sixty-nine thousand, five hundred ten".