11561756450 has 24 divisors (see below), whose sum is σ = 21594867840. Its totient is φ = 4605347600.

The previous prime is 11561756299. The next prime is 11561756483. The reversal of 11561756450 is 5465716511.

It is a junction number, because it is equal to n+sod(n) for n = 11561756398 and 11561756407.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 471806 + ... + 495705.

It is an arithmetic number, because the mean of its divisors is an integer number (899786160).

Almost surely, 2^11561756450 is an apocalyptic number.

11561756450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11561756450 is a deficient number, since it is larger than the sum of its proper divisors (10033111390).

11561756450 is a wasteful number, since it uses less digits than its factorization.

11561756450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967762 (or 967757 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 41.

The spelling of 11561756450 in words is "eleven billion, five hundred sixty-one million, seven hundred fifty-six thousand, four hundred fifty".