400995369181 has 24 divisors (see below), whose sum is σ = 464957109504. Its totient is φ = 342904481280.

The previous prime is 400995369161. The next prime is 400995369217. The reversal of 400995369181 is 181963599004.

It is not a de Polignac number, because 400995369181 - 2⁷ = 400995369053 is a prime.

It is a super-2 number, since 2×400995369181² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400995369101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5760721 + ... + 5829913.

It is an arithmetic number, because the mean of its divisors is an integer number (19373212896).

Almost surely, 2^400995369181 is an apocalyptic number.

It is an amenable number.

400995369181 is a deficient number, since it is larger than the sum of its proper divisors (63961740323).

400995369181 is a wasteful number, since it uses less digits than its factorization.

400995369181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71061 (or 71044 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 55.

The spelling of 400995369181 in words is "four hundred billion, nine hundred ninety-five million, three hundred sixty-nine thousand, one hundred eighty-one".