1401103404520 has 32 divisors (see below), whose sum is σ = 3152750139720. Its totient is φ = 560393809920.

The previous prime is 1401103404517. The next prime is 1401103404557. The reversal of 1401103404520 is 254043011041.

It can be written as a sum of positive squares in 4 ways, for example, as 1343044574404 + 58058830116 = 1158898^2 + 240954^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1006761 + ... + 1953400.

Almost surely, 2^{1401103404520} is an apocalyptic number.

1401103404520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401103404520 is an abundant number, since it is smaller than the sum of its proper divisors (1751646735200).

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

1401103404520 is a wasteful number, since it uses less digits than its factorization.

1401103404520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972005 (or 2972001 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 1401103404520 its reverse (254043011041), we get a palindrome (1655146415561).

The spelling of 1401103404520 in words is "one trillion, four hundred one billion, one hundred three million, four hundred four thousand, five hundred twenty".