400552021001063 has 4 divisors (see below), whose sum is σ = 400554016986600. Its totient is φ = 400550025015528.

The previous prime is 400552021001029. The next prime is 400552021001087. The reversal of 400552021001063 is 360100120255004.

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

It is a cyclic number.

It is not a de Polignac number, because 400552021001063 - 2⁴⁶ = 330183276823399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400552021001863) 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, 997691720 + ... + 998093117.

It is an arithmetic number, because the mean of its divisors is an integer number (100138504246650).

Almost surely, 2^{400552021001063} is an apocalyptic number.

400552021001063 is a deficient number, since it is larger than the sum of its proper divisors (1995985537).

400552021001063 is a wasteful number, since it uses less digits than its factorization.

400552021001063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995985536.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 400552021001063 its reverse (360100120255004), we get a palindrome (760652141256067).

The spelling of 400552021001063 in words is "four hundred trillion, five hundred fifty-two billion, twenty-one million, one thousand, sixty-three".