866444152160730 has 128 divisors (see below), whose sum is σ = 2446169401025280. Its totient is φ = 193638772316160.

The previous prime is 866444152160711. The next prime is 866444152160753. The reversal of 866444152160730 is 37061251444668.

It is a super-2 number, since 2×866444152160730² (a number of 31 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 127323115 + ... + 133955454.

It is an arithmetic number, because the mean of its divisors is an integer number (19110698445510).

Almost surely, 2^{866444152160730} is an apocalyptic number.

866444152160730 is an abundant number, since it is smaller than the sum of its proper divisors (1579725248864550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866444152160730 is a wasteful number, since it uses less digits than its factorization.

866444152160730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261279376.

The product of its (nonzero) digits is 23224320, while the sum is 57.

The spelling of 866444152160730 in words is "eight hundred sixty-six trillion, four hundred forty-four billion, one hundred fifty-two million, one hundred sixty thousand, seven hundred thirty".