21498903246 has 16 divisors (see below), whose sum is σ = 43001280000. Its totient is φ = 7165722168.

The previous prime is 21498903221. The next prime is 21498903247. The reversal of 21498903246 is 64230989412.

It is a junction number, because it is equal to n+sod(n) for n = 21498903195 and 21498903204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21498903247) 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, 60496 + ... + 216003.

It is an arithmetic number, because the mean of its divisors is an integer number (2687580000).

Almost surely, 2^21498903246 is an apocalyptic number.

21498903246 is an abundant number, since it is smaller than the sum of its proper divisors (21502376754).

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

21498903246 is a wasteful number, since it uses less digits than its factorization.

21498903246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289463.

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 21498903246 in words is "twenty-one billion, four hundred ninety-eight million, nine hundred three thousand, two hundred forty-six".