863354870631 has 24 divisors (see below), whose sum is σ = 1364027583360. Its totient is φ = 521864758800.

The previous prime is 863354870537. The next prime is 863354870633. The reversal of 863354870631 is 136078453368.

863354870631 is a `hidden beast` number, since 8 + 6 + 33 + 548 + 7 + 0 + 63 + 1 = 666.

It is not a de Polignac number, because 863354870631 - 2¹¹ = 863354868583 is a prime.

It is a super-2 number, since 2×863354870631² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863354870633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11467435 + ... + 11542476.

It is an arithmetic number, because the mean of its divisors is an integer number (56834482640).

Almost surely, 2^863354870631 is an apocalyptic number.

863354870631 is a deficient number, since it is larger than the sum of its proper divisors (500672712729).

863354870631 is a wasteful number, since it uses less digits than its factorization.

863354870631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23010307 (or 23010304 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 863354870631 in words is "eight hundred sixty-three billion, three hundred fifty-four million, eight hundred seventy thousand, six hundred thirty-one".