16818631011 has 96 divisors (see below), whose sum is σ = 30628835328. Its totient is φ = 8656243200.

The previous prime is 16818631009. The next prime is 16818631019. The reversal of 16818631011 is 11013681861.

16818631011 is a `hidden beast` number, since 1 + 6 + 8 + 1 + 8 + 631 + 0 + 11 = 666.

It is not a de Polignac number, because 16818631011 - 2¹ = 16818631009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16818631019) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23133930 + ... + 23134656.

It is an arithmetic number, because the mean of its divisors is an integer number (319050368).

Almost surely, 2^16818631011 is an apocalyptic number.

16818631011 is a deficient number, since it is larger than the sum of its proper divisors (13810204317).

16818631011 is a wasteful number, since it uses less digits than its factorization.

16818631011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401 (or 1398 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The spelling of 16818631011 in words is "sixteen billion, eight hundred eighteen million, six hundred thirty-one thousand, eleven".