10018998081 has 16 divisors (see below), whose sum is σ = 14845360320. Its totient is φ = 6678252000.

The previous prime is 10018998061. The next prime is 10018998107. The reversal of 10018998081 is 18089981001.

It is a de Polignac number, because none of the positive numbers 2^k-10018998081 is a prime.

It is a super-2 number, since 2×10018998081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10018998061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162526 + ... + 215528.

It is an arithmetic number, because the mean of its divisors is an integer number (927835020).

Almost surely, 2^10018998081 is an apocalyptic number.

It is an amenable number.

10018998081 is a deficient number, since it is larger than the sum of its proper divisors (4826362239).

10018998081 is an equidigital number, since it uses as much as digits as its factorization.

10018998081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60013 (or 60007 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 45.

The spelling of 10018998081 in words is "ten billion, eighteen million, nine hundred ninety-eight thousand, eighty-one".