11475442887 has 16 divisors (see below), whose sum is σ = 15818880000. Its totient is φ = 7391923200.

The previous prime is 11475442871. The next prime is 11475442907. The reversal of 11475442887 is 78824457411.

It is not a de Polignac number, because 11475442887 - 2⁴ = 11475442871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11475447887) 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, 36637 + ... + 155862.

It is an arithmetic number, because the mean of its divisors is an integer number (988680000).

Almost surely, 2^11475442887 is an apocalyptic number.

11475442887 is a deficient number, since it is larger than the sum of its proper divisors (4343437113).

11475442887 is a wasteful number, since it uses less digits than its factorization.

11475442887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193174.

The product of its digits is 2007040, while the sum is 51.

It can be divided in two parts, 114754 and 42887, that added together give a triangular number (157641 = T₅₆₁).

The spelling of 11475442887 in words is "eleven billion, four hundred seventy-five million, four hundred forty-two thousand, eight hundred eighty-seven".