11540705651 has 4 divisors (see below), whose sum is σ = 11591545992. Its totient is φ = 11489865312.

The previous prime is 11540705641. The next prime is 11540705677. The reversal of 11540705651 is 15650704511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11540705651 - 2⁶ = 11540705587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11540705641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25419830 + ... + 25420283.

It is an arithmetic number, because the mean of its divisors is an integer number (2897886498).

Almost surely, 2^11540705651 is an apocalyptic number.

11540705651 is a deficient number, since it is larger than the sum of its proper divisors (50840341).

11540705651 is an equidigital number, since it uses as much as digits as its factorization.

11540705651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50840340.

The product of its (nonzero) digits is 21000, while the sum is 35.

The spelling of 11540705651 in words is "eleven billion, five hundred forty million, seven hundred five thousand, six hundred fifty-one".