863814533586642 has 48 divisors (see below), whose sum is σ = 2070500392958400. Its totient is φ = 258075191421600.

The previous prime is 863814533586629. The next prime is 863814533586643. The reversal of 863814533586642 is 246685335418368.

863814533586642 is a `hidden beast` number, since 8 + 6 + 3 + 8 + 1 + 4 + 5 + 33 + 586 + 6 + 4 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (863814533586643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30723223017 + ... + 30723251132.

It is an arithmetic number, because the mean of its divisors is an integer number (43135424853300).

Almost surely, 2^{863814533586642} is an apocalyptic number.

863814533586642 is an abundant number, since it is smaller than the sum of its proper divisors (1206685859371758).

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

863814533586642 is a wasteful number, since it uses less digits than its factorization.

863814533586642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61446474239 (or 61446474236 counting only the distinct ones).

The product of its digits is 2388787200, while the sum is 72.

The spelling of 863814533586642 in words is "eight hundred sixty-three trillion, eight hundred fourteen billion, five hundred thirty-three million, five hundred eighty-six thousand, six hundred forty-two".