11166181628 has 12 divisors (see below), whose sum is σ = 22332363312. Its totient is φ = 4785506400.

The previous prime is 11166181619. The next prime is 11166181633. The reversal of 11166181628 is 82618166111.

11166181628 is an admirable number.

It is a super-2 number, since 2×11166181628² (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 3 ways as a sum of consecutive naturals, for example, 199396073 + ... + 199396128.

It is an arithmetic number, because the mean of its divisors is an integer number (1861030276).

Almost surely, 2^11166181628 is an apocalyptic number.

It is an amenable number.

11166181628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11166181628 is a wasteful number, since it uses less digits than its factorization.

11166181628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398792212 (or 398792210 counting only the distinct ones).

The product of its digits is 27648, while the sum is 41.

The spelling of 11166181628 in words is "eleven billion, one hundred sixty-six million, one hundred eighty-one thousand, six hundred twenty-eight".