400685228356 has 24 divisors (see below), whose sum is σ = 801665338880. Its totient is φ = 171659051712.

The previous prime is 400685228353. The next prime is 400685228371. The reversal of 400685228356 is 653822586004.

It is not an unprimeable number, because it can be changed into a prime (400685228353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2555385 + ... + 2707648.

Almost surely, 2^400685228356 is an apocalyptic number.

It is an amenable number.

400685228356 is an abundant number, since it is smaller than the sum of its proper divisors (400980110524).

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

400685228356 is a wasteful number, since it uses less digits than its factorization.

400685228356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5265763 (or 5265761 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 49.

The spelling of 400685228356 in words is "four hundred billion, six hundred eighty-five million, two hundred twenty-eight thousand, three hundred fifty-six".