866130153731261 has 16 divisors (see below), whose sum is σ = 881911934166528. Its totient is φ = 850399857691200.

The previous prime is 866130153731231. The next prime is 866130153731273. The reversal of 866130153731261 is 162137351031668.

It is a cyclic number.

It is not a de Polignac number, because 866130153731261 - 2²² = 866130149536957 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 (866130153731231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244880966 + ... + 248392728.

It is an arithmetic number, because the mean of its divisors is an integer number (55119495885408).

Almost surely, 2^{866130153731261} is an apocalyptic number.

It is an amenable number.

866130153731261 is a deficient number, since it is larger than the sum of its proper divisors (15781780435267).

866130153731261 is a wasteful number, since it uses less digits than its factorization.

866130153731261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519092.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 866130153731261 in words is "eight hundred sixty-six trillion, one hundred thirty billion, one hundred fifty-three million, seven hundred thirty-one thousand, two hundred sixty-one".