11661010651 has 8 divisors (see below), whose sum is σ = 12469201344. Its totient is φ = 10866403200.

The previous prime is 11661010643. The next prime is 11661010661. The reversal of 11661010651 is 15601016611.

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

It is a cyclic number.

It is not a de Polignac number, because 11661010651 - 2³ = 11661010643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11661010631) 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, 3394035 + ... + 3397468.

It is an arithmetic number, because the mean of its divisors is an integer number (1558650168).

Almost surely, 2^11661010651 is an apocalyptic number.

11661010651 is a deficient number, since it is larger than the sum of its proper divisors (808190693).

11661010651 is a wasteful number, since it uses less digits than its factorization.

11661010651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6791621.

The product of its (nonzero) digits is 1080, while the sum is 28.

The spelling of 11661010651 in words is "eleven billion, six hundred sixty-one million, ten thousand, six hundred fifty-one".