400548381332 has 48 divisors (see below), whose sum is σ = 773414839680. Its totient is φ = 179992627200.

The previous prime is 400548381329. The next prime is 400548381353. The reversal of 400548381332 is 233183845004.

It is a self number, because there is not a number n which added to its sum of digits gives 400548381332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3871232 + ... + 3973352.

It is an arithmetic number, because the mean of its divisors is an integer number (16112809160).

Almost surely, 2^400548381332 is an apocalyptic number.

It is an amenable number.

400548381332 is a deficient number, since it is larger than the sum of its proper divisors (372866458348).

400548381332 is a wasteful number, since it uses less digits than its factorization.

400548381332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103152 (or 103150 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 400548381332 in words is "four hundred billion, five hundred forty-eight million, three hundred eighty-one thousand, three hundred thirty-two".