1018667081172 has 24 divisors (see below), whose sum is σ = 2559727537696. Its totient is φ = 313436024928.

The previous prime is 1018667081137. The next prime is 1018667081183. The reversal of 1018667081172 is 2711807668101.

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, 3264958438 + ... + 3264958749.

Almost surely, 2^{1018667081172} is an apocalyptic number.

1018667081172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1018667081172 is an abundant number, since it is smaller than the sum of its proper divisors (1541060456524).

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

1018667081172 is a wasteful number, since it uses less digits than its factorization.

1018667081172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6529917207 (or 6529917205 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 48.

The spelling of 1018667081172 in words is "one trillion, eighteen billion, six hundred sixty-seven million, eighty-one thousand, one hundred seventy-two".