400320771210 has 32 divisors (see below), whose sum is σ = 1067522057280. Its totient is φ = 106752205584.

The previous prime is 400320771197. The next prime is 400320771217. The reversal of 400320771210 is 12177023004.

It is a happy number.

400320771210 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (400320771217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 741334492 + ... + 741335031.

It is an arithmetic number, because the mean of its divisors is an integer number (33360064290).

Almost surely, 2^400320771210 is an apocalyptic number.

400320771210 is an abundant number, since it is smaller than the sum of its proper divisors (667201286070).

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

400320771210 is a wasteful number, since it uses less digits than its factorization.

400320771210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482669539 (or 1482669533 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

Adding to 400320771210 its reverse (12177023004), we get a palindrome (412497794214).

The spelling of 400320771210 in words is "four hundred billion, three hundred twenty million, seven hundred seventy-one thousand, two hundred ten".