401456281785 has 32 divisors (see below), whose sum is σ = 691816083840. Its totient is φ = 197618293248.

The previous prime is 401456281741. The next prime is 401456281841. The reversal of 401456281785 is 587182654104.

It is a happy number.

It is not a de Polignac number, because 401456281785 - 2⁸ = 401456281529 is a prime.

It is a super-2 number, since 2×401456281785² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1743526 + ... + 1960304.

It is an arithmetic number, because the mean of its divisors is an integer number (21619252620).

Almost surely, 2^401456281785 is an apocalyptic number.

It is an amenable number.

401456281785 is a deficient number, since it is larger than the sum of its proper divisors (290359802055).

401456281785 is a wasteful number, since it uses less digits than its factorization.

401456281785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226297.

The product of its (nonzero) digits is 2150400, while the sum is 51.

The spelling of 401456281785 in words is "four hundred one billion, four hundred fifty-six million, two hundred eighty-one thousand, seven hundred eighty-five".