11787070561 has 8 divisors (see below), whose sum is σ = 13935453120. Its totient is φ = 9754816848.

The previous prime is 11787070549. The next prime is 11787070571. The reversal of 11787070561 is 16507078711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11787070561 - 2¹³ = 11787062369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11787070531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29031991 + ... + 29032396.

It is an arithmetic number, because the mean of its divisors is an integer number (1741931640).

Almost surely, 2^11787070561 is an apocalyptic number.

It is an amenable number.

11787070561 is a deficient number, since it is larger than the sum of its proper divisors (2148382559).

11787070561 is an equidigital number, since it uses as much as digits as its factorization.

11787070561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58064423.

The product of its (nonzero) digits is 82320, while the sum is 43.

The spelling of 11787070561 in words is "eleven billion, seven hundred eighty-seven million, seventy thousand, five hundred sixty-one".