21498131046 has 16 divisors (see below), whose sum is σ = 49138585344. Its totient is φ = 6142323144.

The previous prime is 21498131029. The next prime is 21498131111. The reversal of 21498131046 is 64013189412.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21498130995 and 21498131013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255930090 + ... + 255930173.

It is an arithmetic number, because the mean of its divisors is an integer number (3071161584).

Almost surely, 2^21498131046 is an apocalyptic number.

21498131046 is an abundant number, since it is smaller than the sum of its proper divisors (27640454298).

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

21498131046 is a wasteful number, since it uses less digits than its factorization.

21498131046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511860275.

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 21498131046 in words is "twenty-one billion, four hundred ninety-eight million, one hundred thirty-one thousand, forty-six".