168180028892 has 48 divisors (see below), whose sum is σ = 330612387840. Its totient is φ = 74387642112.

The previous prime is 168180028883. The next prime is 168180028927. The reversal of 168180028892 is 298820081861.

It is a happy number.

It is a super-2 number, since 2×168180028892² (a number of 23 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 15 ways as a sum of consecutive naturals, for example, 348398 + ... + 676565.

It is an arithmetic number, because the mean of its divisors is an integer number (6887758080).

Almost surely, 2^168180028892 is an apocalyptic number.

It is an amenable number.

168180028892 is a deficient number, since it is larger than the sum of its proper divisors (162432358948).

168180028892 is a wasteful number, since it uses less digits than its factorization.

168180028892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025130 (or 1025128 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 53.

The spelling of 168180028892 in words is "one hundred sixty-eight billion, one hundred eighty million, twenty-eight thousand, eight hundred ninety-two".