866788526245004 has 24 divisors (see below), whose sum is σ = 1664930108428608. Its totient is φ = 391577638735440.

The previous prime is 866788526244961. The next prime is 866788526245007. The reversal of 866788526245004 is 400542625887668.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (866788526245007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60428640782 + ... + 60428655125.

It is an arithmetic number, because the mean of its divisors is an integer number (69372087851192).

Almost surely, 2^{866788526245004} is an apocalyptic number.

It is an amenable number.

866788526245004 is a deficient number, since it is larger than the sum of its proper divisors (798141582183604).

866788526245004 is a wasteful number, since it uses less digits than its factorization.

866788526245004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120857296085 (or 120857296083 counting only the distinct ones).

The product of its (nonzero) digits is 1238630400, while the sum is 71.

The spelling of 866788526245004 in words is "eight hundred sixty-six trillion, seven hundred eighty-eight billion, five hundred twenty-six million, two hundred forty-five thousand, four".