11751740505 has 48 divisors (see below), whose sum is σ = 20643779520. Its totient is φ = 6183471744.

The previous prime is 11751740491. The next prime is 11751740593. The reversal of 11751740505 is 50504715711.

It is a happy number.

11751740505 is a `hidden beast` number, since 11 + 75 + 1 + 74 + 0 + 505 = 666.

It is not a de Polignac number, because 11751740505 - 2⁴ = 11751740489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11751740505.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3385911 + ... + 3389379.

It is an arithmetic number, because the mean of its divisors is an integer number (430078740).

Almost surely, 2^11751740505 is an apocalyptic number.

11751740505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11751740505 is a deficient number, since it is larger than the sum of its proper divisors (8892039015).

11751740505 is a wasteful number, since it uses less digits than its factorization.

11751740505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4470 (or 4467 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 36.

The spelling of 11751740505 in words is "eleven billion, seven hundred fifty-one million, seven hundred forty thousand, five hundred five".