10998244639 has 32 divisors (see below), whose sum is σ = 12379392000. Its totient is φ = 9710046720.

The previous prime is 10998244619. The next prime is 10998244651. The reversal of 10998244639 is 93644289901.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10998244639 is a prime.

It is a super-2 number, since 2×10998244639² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10998244639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10998244619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25517754 + ... + 25518184.

It is an arithmetic number, because the mean of its divisors is an integer number (386856000).

Almost surely, 2^10998244639 is an apocalyptic number.

10998244639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

10998244639 is a deficient number, since it is larger than the sum of its proper divisors (1381147361).

10998244639 is a wasteful number, since it uses less digits than its factorization.

10998244639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 10998244639 in words is "ten billion, nine hundred ninety-eight million, two hundred forty-four thousand, six hundred thirty-nine".