400164016552 has 8 divisors (see below), whose sum is σ = 750307531050. Its totient is φ = 200082008272.

The previous prime is 400164016529. The next prime is 400164016619. The reversal of 400164016552 is 255610461004.

It can be written as a sum of positive squares in only one way, i.e., 328610976516 + 71553040036 = 573246^2 + 267494^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25010251027 + ... + 25010251042.

Almost surely, 2^400164016552 is an apocalyptic number.

It is an amenable number.

400164016552 is a deficient number, since it is larger than the sum of its proper divisors (350143514498).

400164016552 is a wasteful number, since it uses less digits than its factorization.

400164016552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50020502075 (or 50020502071 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 400164016552 its reverse (255610461004), we get a palindrome (655774477556).

The spelling of 400164016552 in words is "four hundred billion, one hundred sixty-four million, sixteen thousand, five hundred fifty-two".