400525216636213 has 4 divisors (see below), whose sum is σ = 400530038896480. Its totient is φ = 400520394375948.

The previous prime is 400525216636163. The next prime is 400525216636241. The reversal of 400525216636213 is 312636612525004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400525216636213 - 2⁴⁵ = 365340844547381 is a prime.

It is a super-2 number, since 2×400525216636213² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400525216636253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2411005545 + ... + 2411171662.

It is an arithmetic number, because the mean of its divisors is an integer number (100132509724120).

Almost surely, 2^{400525216636213} is an apocalyptic number.

It is an amenable number.

400525216636213 is a deficient number, since it is larger than the sum of its proper divisors (4822260267).

400525216636213 is an equidigital number, since it uses as much as digits as its factorization.

400525216636213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4822260266.

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 400525216636213 in words is "four hundred trillion, five hundred twenty-five billion, two hundred sixteen million, six hundred thirty-six thousand, two hundred thirteen".