400003544502 has 48 divisors (see below), whose sum is σ = 869010559872. Its totient is φ = 132975561600.

The previous prime is 400003544497. The next prime is 400003544509. The reversal of 400003544502 is 205445300004.

It is a super-2 number, since 2×400003544502² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400003544509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10767003 + ... + 10804089.

It is an arithmetic number, because the mean of its divisors is an integer number (18104386664).

Almost surely, 2^400003544502 is an apocalyptic number.

400003544502 is an abundant number, since it is smaller than the sum of its proper divisors (469007015370).

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

400003544502 is a wasteful number, since it uses less digits than its factorization.

400003544502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38693 (or 38690 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

Adding to 400003544502 its reverse (205445300004), we get a palindrome (605448844506).

The spelling of 400003544502 in words is "four hundred billion, three million, five hundred forty-four thousand, five hundred two".