866514153080851 has 8 divisors (see below), whose sum is σ = 975781333675008. Its totient is φ = 762329166933000.

The previous prime is 866514153080833. The next prime is 866514153080861. The reversal of 866514153080851 is 158080351415668.

It is a happy number.

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 866514153080851 - 2⁵ = 866514153080819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 866514153080851.

It is not an unprimeable number, because it can be changed into a prime (866514153080861) 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, 1270548611215 + ... + 1270548611896.

It is an arithmetic number, because the mean of its divisors is an integer number (121972666709376).

Almost surely, 2^{866514153080851} is an apocalyptic number.

866514153080851 is a deficient number, since it is larger than the sum of its proper divisors (109267180594157).

866514153080851 is a wasteful number, since it uses less digits than its factorization.

866514153080851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541097223153.

The product of its (nonzero) digits is 27648000, while the sum is 61.

The spelling of 866514153080851 in words is "eight hundred sixty-six trillion, five hundred fourteen billion, one hundred fifty-three million, eighty thousand, eight hundred fifty-one".