401823166842188 has 24 divisors (see below), whose sum is σ = 865465282430112. Its totient is φ = 158963011058304.

The previous prime is 401823166842073. The next prime is 401823166842191. The reversal of 401823166842188 is 881248661328104.

It is a super-2 number, since 2×401823166842188² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401823166842188.

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, 551954899145 + ... + 551954899872.

It is an arithmetic number, because the mean of its divisors is an integer number (36061053434588).

Almost surely, 2^{401823166842188} is an apocalyptic number.

It is an amenable number.

401823166842188 is an abundant number, since it is smaller than the sum of its proper divisors (463642115587924).

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

401823166842188 is a wasteful number, since it uses less digits than its factorization.

401823166842188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103909799041 (or 1103909799039 counting only the distinct ones).

The product of its (nonzero) digits is 28311552, while the sum is 62.

The spelling of 401823166842188 in words is "four hundred one trillion, eight hundred twenty-three billion, one hundred sixty-six million, eight hundred forty-two thousand, one hundred eighty-eight".