400435130001523 has 4 divisors (see below), whose sum is σ = 414243237932640. Its totient is φ = 386627022070408.

The previous prime is 400435130001479. The next prime is 400435130001619. The reversal of 400435130001523 is 325100031534004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400435130001523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400435130031523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6904053965515 + ... + 6904053965572.

It is an arithmetic number, because the mean of its divisors is an integer number (103560809483160).

Almost surely, 2^{400435130001523} is an apocalyptic number.

400435130001523 is a deficient number, since it is larger than the sum of its proper divisors (13808107931117).

400435130001523 is a wasteful number, since it uses less digits than its factorization.

400435130001523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13808107931116.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 400435130001523 its reverse (325100031534004), we get a palindrome (725535161535527).

The spelling of 400435130001523 in words is "four hundred trillion, four hundred thirty-five billion, one hundred thirty million, one thousand, five hundred twenty-three".