400145213304 has 24 divisors (see below), whose sum is σ = 1083726619560. Its totient is φ = 133381737744.

The previous prime is 400145213269. The next prime is 400145213323. The reversal of 400145213304 is 403312541004.

It is a happy number.

400145213304 is a `hidden beast` number, since 4 + 0 + 0 + 145 + 213 + 304 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2778786132 + ... + 2778786275.

It is an arithmetic number, because the mean of its divisors is an integer number (45155275815).

Almost surely, 2^400145213304 is an apocalyptic number.

It is an amenable number.

400145213304 is an abundant number, since it is smaller than the sum of its proper divisors (683581406256).

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

400145213304 is a wasteful number, since it uses less digits than its factorization.

400145213304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5557572419 (or 5557572412 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 400145213304 its reverse (403312541004), we get a palindrome (803457754308).

The spelling of 400145213304 in words is "four hundred billion, one hundred forty-five million, two hundred thirteen thousand, three hundred four".