400435211021234 has 4 divisors (see below), whose sum is σ = 600652816531854. Its totient is φ = 200217605510616.

The previous prime is 400435211021189. The next prime is 400435211021257. The reversal of 400435211021234 is 432120112534004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 393745244290225 + 6689966731009 = 19843015^2 + 2586497^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 400435211021234.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100108802755307 + ... + 100108802755310.

Almost surely, 2^{400435211021234} is an apocalyptic number.

400435211021234 is a deficient number, since it is larger than the sum of its proper divisors (200217605510620).

400435211021234 is a wasteful number, since it uses less digits than its factorization.

400435211021234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200217605510619.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 400435211021234 its reverse (432120112534004), we get a palindrome (832555323555238).

The spelling of 400435211021234 in words is "four hundred trillion, four hundred thirty-five billion, two hundred eleven million, twenty-one thousand, two hundred thirty-four".