400533213204 has 42 divisors (see below), whose sum is σ = 1050918942570. Its totient is φ = 133511070096.

The previous prime is 400533213187. The next prime is 400533213221. The reversal of 400533213204 is 402312335004.

400533213204 is a `hidden beast` number, since 4 + 0 + 0 + 5 + 332 + 1 + 320 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (400533213187) and next prime (400533213221).

It can be written as a sum of positive squares in only one way, i.e., 274932435600 + 125600777604 = 524340^2 + 354402^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 68675619 + ... + 68681450.

It is an arithmetic number, because the mean of its divisors is an integer number (25021879585).

Almost surely, 2^400533213204 is an apocalyptic number.

It is an amenable number.

400533213204 is an abundant number, since it is smaller than the sum of its proper divisors (650385729366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400533213204 is a wasteful number, since it uses less digits than its factorization.

400533213204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137357091 (or 137357074 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 400533213204 its reverse (402312335004), we get a palindrome (802845548208).

The spelling of 400533213204 in words is "four hundred billion, five hundred thirty-three million, two hundred thirteen thousand, two hundred four".