401553647667 has 8 divisors (see below), whose sum is σ = 594894292880. Its totient is φ = 267702431760.

The previous prime is 401553647659. The next prime is 401553647699. The reversal of 401553647667 is 766746355104.

401553647667 is a `hidden beast` number, since 4 + 0 + 1 + 5 + 536 + 47 + 6 + 67 = 666.

It is not a de Polignac number, because 401553647667 - 2³ = 401553647659 is a prime.

It is a super-2 number, since 2×401553647667² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401553647647) 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 7 ways as a sum of consecutive naturals, for example, 7436178634 + ... + 7436178687.

It is an arithmetic number, because the mean of its divisors is an integer number (74361786610).

Almost surely, 2^401553647667 is an apocalyptic number.

401553647667 is a deficient number, since it is larger than the sum of its proper divisors (193340645213).

401553647667 is a wasteful number, since it uses less digits than its factorization.

401553647667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14872357330 (or 14872357324 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 54.

The spelling of 401553647667 in words is "four hundred one billion, five hundred fifty-three million, six hundred forty-seven thousand, six hundred sixty-seven".