11435957887 has 4 divisors (see below), whose sum is σ = 11701910440. Its totient is φ = 11170005336.

The previous prime is 11435957849. The next prime is 11435957921. The reversal of 11435957887 is 78875953411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78875953411 = 19 ⋅4151365969.

It is a cyclic number.

It is not a de Polignac number, because 11435957887 - 2¹⁹ = 11435433599 is a prime.

It is a super-2 number, since 2×11435957887² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11435957807) 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, 132976212 + ... + 132976297.

It is an arithmetic number, because the mean of its divisors is an integer number (2925477610).

Almost surely, 2^11435957887 is an apocalyptic number.

11435957887 is a deficient number, since it is larger than the sum of its proper divisors (265952553).

11435957887 is an equidigital number, since it uses as much as digits as its factorization.

11435957887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265952552.

The product of its digits is 8467200, while the sum is 58.

The spelling of 11435957887 in words is "eleven billion, four hundred thirty-five million, nine hundred fifty-seven thousand, eight hundred eighty-seven".