10689641998 has 16 divisors (see below), whose sum is σ = 18583202304. Its totient is φ = 4516749720.

The previous prime is 10689641959. The next prime is 10689642011. The reversal of 10689641998 is 89914698601.

It is a super-2 number, since 2×10689641998² (a number of 21 digits) contains 22 as substring.

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, 5376090 + ... + 5378077.

It is an arithmetic number, because the mean of its divisors is an integer number (1161450144).

Almost surely, 2^10689641998 is an apocalyptic number.

10689641998 is a deficient number, since it is larger than the sum of its proper divisors (7893560306).

10689641998 is a wasteful number, since it uses less digits than its factorization.

10689641998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10754247.

The product of its (nonzero) digits is 6718464, while the sum is 61.

The spelling of 10689641998 in words is "ten billion, six hundred eighty-nine million, six hundred forty-one thousand, nine hundred ninety-eight".