406526401645 has 32 divisors (see below), whose sum is σ = 611736717312. Its totient is φ = 252462742272.

The previous prime is 406526401637. The next prime is 406526401667. The reversal of 406526401645 is 546104625604.

It is not a de Polignac number, because 406526401645 - 2³ = 406526401637 is a prime.

It is a super-3 number, since 3×406526401645³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 8404797 + ... + 8453026.

It is an arithmetic number, because the mean of its divisors is an integer number (19116772416).

Almost surely, 2^406526401645 is an apocalyptic number.

It is an amenable number.

406526401645 is a deficient number, since it is larger than the sum of its proper divisors (205210315667).

406526401645 is a wasteful number, since it uses less digits than its factorization.

406526401645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16857901.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 406526401645 in words is "four hundred six billion, five hundred twenty-six million, four hundred one thousand, six hundred forty-five".