11431126605402 has 48 divisors (see below), whose sum is σ = 28963917702720. Its totient is φ = 3190081841856.

The previous prime is 11431126605389. The next prime is 11431126605427. The reversal of 11431126605402 is 20450662113411.

11431126605402 is a `hidden beast` number, since 1 + 1 + 4 + 3 + 1 + 1 + 2 + 6 + 605 + 40 + 2 = 666.

11431126605402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1054915827 + ... + 1054926662.

It is an arithmetic number, because the mean of its divisors is an integer number (603414952140).

Almost surely, 2^{11431126605402} is an apocalyptic number.

11431126605402 is an abundant number, since it is smaller than the sum of its proper divisors (17532791097318).

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

11431126605402 is a wasteful number, since it uses less digits than its factorization.

11431126605402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109842547 (or 2109842544 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Adding to 11431126605402 its reverse (20450662113411), we get a palindrome (31881788718813).

The spelling of 11431126605402 in words is "eleven trillion, four hundred thirty-one billion, one hundred twenty-six million, six hundred five thousand, four hundred two".