866444154073036 has 48 divisors (see below), whose sum is σ = 1890433303299072. Its totient is φ = 337573913299200.

The previous prime is 866444154073021. The next prime is 866444154073051. The reversal of 866444154073036 is 630370451444668.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (866444154073021) and next prime (866444154073051).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53780740 + ... + 68009236.

It is an arithmetic number, because the mean of its divisors is an integer number (39384027152064).

Almost surely, 2^{866444154073036} is an apocalyptic number.

It is an amenable number.

866444154073036 is an abundant number, since it is smaller than the sum of its proper divisors (1023989149226036).

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

866444154073036 is a wasteful number, since it uses less digits than its factorization.

866444154073036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14426230 (or 14426228 counting only the distinct ones).

The product of its (nonzero) digits is 139345920, while the sum is 61.

The spelling of 866444154073036 in words is "eight hundred sixty-six trillion, four hundred forty-four billion, one hundred fifty-four million, seventy-three thousand, thirty-six".