866766220130037 has 32 divisors (see below), whose sum is σ = 1166356855825920. Its totient is φ = 572524367688000.

The previous prime is 866766220130033. The next prime is 866766220130081. The reversal of 866766220130037 is 730031022667668.

It is not a de Polignac number, because 866766220130037 - 2² = 866766220130033 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866766220130033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 880673514 + ... + 881657172.

It is an arithmetic number, because the mean of its divisors is an integer number (36448651744560).

Almost surely, 2^{866766220130037} is an apocalyptic number.

It is an amenable number.

866766220130037 is a deficient number, since it is larger than the sum of its proper divisors (299590635695883).

866766220130037 is a wasteful number, since it uses less digits than its factorization.

866766220130037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987345.

The product of its (nonzero) digits is 18289152, while the sum is 57.

The spelling of 866766220130037 in words is "eight hundred sixty-six trillion, seven hundred sixty-six billion, two hundred twenty million, one hundred thirty thousand, thirty-seven".