866545511316474 has 64 divisors (see below), whose sum is σ = 1928301150924288. Its totient is φ = 257369698497600.

The previous prime is 866545511316379. The next prime is 866545511316521. The reversal of 866545511316474 is 474613115545668.

It is a happy number.

It is a super-2 number, since 2×866545511316474² (a number of 31 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124165744 + ... + 130958859.

It is an arithmetic number, because the mean of its divisors is an integer number (30129705483192).

Almost surely, 2^{866545511316474} is an apocalyptic number.

866545511316474 is an abundant number, since it is smaller than the sum of its proper divisors (1061755639607814).

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

866545511316474 is a wasteful number, since it uses less digits than its factorization.

866545511316474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255125643.

The product of its digits is 290304000, while the sum is 66.

The spelling of 866545511316474 in words is "eight hundred sixty-six trillion, five hundred forty-five billion, five hundred eleven million, three hundred sixteen thousand, four hundred seventy-four".