11507887755 has 128 divisors (see below), whose sum is σ = 25608038400. Its totient is φ = 4773468672.

The previous prime is 11507887747. The next prime is 11507887763. The reversal of 11507887755 is 55778870511.

11507887755 is a `hidden beast` number, since 1 + 1 + 507 + 8 + 87 + 7 + 55 = 666.

It is an interprime number because it is at equal distance from previous prime (11507887747) and next prime (11507887763).

It is not a de Polignac number, because 11507887755 - 2³ = 11507887747 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 716877 + ... + 732753.

It is an arithmetic number, because the mean of its divisors is an integer number (200062800).

Almost surely, 2^11507887755 is an apocalyptic number.

11507887755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11507887755 is an abundant number, since it is smaller than the sum of its proper divisors (14100150645).

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

11507887755 is a wasteful number, since it uses less digits than its factorization.

11507887755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15970 (or 15964 counting only the distinct ones).

The product of its (nonzero) digits is 2744000, while the sum is 54.

The spelling of 11507887755 in words is "eleven billion, five hundred seven million, eight hundred eighty-seven thousand, seven hundred fifty-five".