11858161992 has 32 divisors (see below), whose sum is σ = 29670965280. Its totient is φ = 3949312640.

The previous prime is 11858161979. The next prime is 11858162011. The reversal of 11858161992 is 29916185811.

It is a super-3 number, since 3×11858161992³ (a number of 31 digits) contains 333 as substring.

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, 184509 + ... + 240332.

It is an arithmetic number, because the mean of its divisors is an integer number (927217665).

Almost surely, 2^11858161992 is an apocalyptic number.

11858161992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11858161992 is an abundant number, since it is smaller than the sum of its proper divisors (17812803288).

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

11858161992 is a wasteful number, since it uses less digits than its factorization.

11858161992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426013 (or 426009 counting only the distinct ones).

The product of its digits is 311040, while the sum is 51.

The spelling of 11858161992 in words is "eleven billion, eight hundred fifty-eight million, one hundred sixty-one thousand, nine hundred ninety-two".