400526064465 has 16 divisors (see below), whose sum is σ = 640899864000. Its totient is φ = 213594514112.

The previous prime is 400526064383. The next prime is 400526064469. The reversal of 400526064465 is 564460625004.

It is a cyclic number.

It is not a de Polignac number, because 400526064465 - 2⁹ = 400526063953 is a prime.

It is a super-2 number, since 2×400526064465² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (400526064469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1040115 + ... + 1372184.

It is an arithmetic number, because the mean of its divisors is an integer number (40056241500).

Almost surely, 2^400526064465 is an apocalyptic number.

It is an amenable number.

400526064465 is a deficient number, since it is larger than the sum of its proper divisors (240373799535).

400526064465 is a wasteful number, since it uses less digits than its factorization.

400526064465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2423376.

The product of its (nonzero) digits is 691200, while the sum is 42.

Adding to 400526064465 its reverse (564460625004), we get a palindrome (964986689469).

The spelling of 400526064465 in words is "four hundred billion, five hundred twenty-six million, sixty-four thousand, four hundred sixty-five".