400564542002 has 4 divisors (see below), whose sum is σ = 600846813006. Its totient is φ = 200282271000.

The previous prime is 400564541959. The next prime is 400564542013. The reversal of 400564542002 is 200245465004.

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., 366435304921 + 34129237081 = 605339^2 + 184741^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 400564542002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100141135499 + ... + 100141135502.

Almost surely, 2^400564542002 is an apocalyptic number.

400564542002 is a deficient number, since it is larger than the sum of its proper divisors (200282271004).

400564542002 is a wasteful number, since it uses less digits than its factorization.

400564542002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200282271003.

The product of its (nonzero) digits is 38400, while the sum is 32.

The spelling of 400564542002 in words is "four hundred billion, five hundred sixty-four million, five hundred forty-two thousand, two".