400521063130 has 16 divisors (see below), whose sum is σ = 723241235304. Its totient is φ = 159696576000.

The previous prime is 400521063113. The next prime is 400521063149. The reversal of 400521063130 is 31360125004.

It can be written as a sum of positive squares in 4 ways, for example, as 69977708089 + 330543355041 = 264533^2 + 574929^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400521063095 and 400521063104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63977871 + ... + 63984130.

Almost surely, 2^400521063130 is an apocalyptic number.

400521063130 is a deficient number, since it is larger than the sum of its proper divisors (322720172174).

400521063130 is a wasteful number, since it uses less digits than its factorization.

400521063130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127962321.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 400521063130 its reverse (31360125004), we get a palindrome (431881188134).

The spelling of 400521063130 in words is "four hundred billion, five hundred twenty-one million, sixty-three thousand, one hundred thirty".