403555201324240 has 80 divisors (see below), whose sum is σ = 1076174954001792. Its totient is φ = 137862282235392.

The previous prime is 403555201324211. The next prime is 403555201324243. The reversal of 403555201324240 is 42423102555304.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×403555201324240² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 403555201324193 and 403555201324202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403555201324243) 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, 1300628794 + ... + 1300939033.

Almost surely, 2^{403555201324240} is an apocalyptic number.

403555201324240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403555201324240 is an abundant number, since it is smaller than the sum of its proper divisors (672619752677552).

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

403555201324240 is a wasteful number, since it uses less digits than its factorization.

403555201324240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2601568124 (or 2601568118 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 40.

Adding to 403555201324240 its reverse (42423102555304), we get a palindrome (445978303879544).

The spelling of 403555201324240 in words is "four hundred three trillion, five hundred fifty-five billion, two hundred one million, three hundred twenty-four thousand, two hundred forty".