11987585101 has 4 divisors (see below), whose sum is σ = 12041341312. Its totient is φ = 11933828892.

The previous prime is 11987585081. The next prime is 11987585123. The reversal of 11987585101 is 10158578911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11987585101 - 2⁵ = 11987585069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11987585801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26877771 + ... + 26878216.

It is an arithmetic number, because the mean of its divisors is an integer number (3010335328).

Almost surely, 2^11987585101 is an apocalyptic number.

It is an amenable number.

11987585101 is a deficient number, since it is larger than the sum of its proper divisors (53756211).

11987585101 is an equidigital number, since it uses as much as digits as its factorization.

11987585101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53756210.

The product of its (nonzero) digits is 100800, while the sum is 46.

The spelling of 11987585101 in words is "eleven billion, nine hundred eighty-seven million, five hundred eighty-five thousand, one hundred one".