10998244638 has 24 divisors (see below), whose sum is σ = 24712106328. Its totient is φ = 3666081384.

The previous prime is 10998244619. The next prime is 10998244651. The reversal of 10998244638 is 83644289901.

10998244638 is a `hidden beast` number, since 1 + 0 + 99 + 82 + 446 + 38 = 666.

It is a super-2 number, since 2×10998244638² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11314581 + ... + 11315552.

It is an arithmetic number, because the mean of its divisors is an integer number (1029671097).

Almost surely, 2^10998244638 is an apocalyptic number.

10998244638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10998244638 is an abundant number, since it is smaller than the sum of its proper divisors (13713861690).

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

10998244638 is an equidigital number, since it uses as much as digits as its factorization.

10998244638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22630150 (or 22630138 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 10998244638 in words is "ten billion, nine hundred ninety-eight million, two hundred forty-four thousand, six hundred thirty-eight".