11687066501 has 4 divisors (see below), whose sum is σ = 12749527104. Its totient is φ = 10624605900.

The previous prime is 11687066477. The next prime is 11687066509. The reversal of 11687066501 is 10566078611.

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 a de Polignac number, because none of the positive numbers 2^k-11687066501 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 (11687066509) 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, 531230285 + ... + 531230306.

It is an arithmetic number, because the mean of its divisors is an integer number (3187381776).

Almost surely, 2^11687066501 is an apocalyptic number.

11687066501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11687066501 is a deficient number, since it is larger than the sum of its proper divisors (1062460603).

11687066501 is a wasteful number, since it uses less digits than its factorization.

11687066501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062460602.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 11687066501 in words is "eleven billion, six hundred eighty-seven million, sixty-six thousand, five hundred one".