401684004004 has 6 divisors (see below), whose sum is σ = 702947007014. Its totient is φ = 200842002000.

The previous prime is 401684003969. The next prime is 401684004013. The reversal of 401684004004 is 400400486104.

It can be written as a sum of positive squares in only one way, i.e., 248801440000 + 152882564004 = 498800^2 + 391002^2 .

It is a super-2 number, since 2×401684004004² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50210500497 + ... + 50210500504.

Almost surely, 2^401684004004 is an apocalyptic number.

It is an amenable number.

401684004004 is a deficient number, since it is larger than the sum of its proper divisors (301263003010).

401684004004 is a wasteful number, since it uses less digits than its factorization.

401684004004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100421001005 (or 100421001003 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The spelling of 401684004004 in words is "four hundred one billion, six hundred eighty-four million, four thousand, four".