361984870863 has 90 divisors (see below), whose sum is σ = 679576105208. Its totient is φ = 187962223680.

The previous prime is 361984870837. The next prime is 361984870903. The reversal of 361984870863 is 368078489163.

361984870863 is a `hidden beast` number, since 3 + 6 + 1 + 98 + 487 + 0 + 8 + 63 = 666.

It is not a de Polignac number, because 361984870863 - 2⁶ = 361984870799 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 361984870863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361984874863) 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 89 ways as a sum of consecutive naturals, for example, 157589131 + ... + 157591427.

Almost surely, 2^361984870863 is an apocalyptic number.

361984870863 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

361984870863 is a deficient number, since it is larger than the sum of its proper divisors (317591234345).

361984870863 is an frugal number, since it uses more digits than its factorization.

361984870863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4635 (or 2318 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 63.

Multiplying 361984870863 by its sum of digits (63), we get a square (22805046864369 = 4775463²).

361984870863 divided by its sum of digits (63) gives a square (5745791601 = 75801²).

The spelling of 361984870863 in words is "three hundred sixty-one billion, nine hundred eighty-four million, eight hundred seventy thousand, eight hundred sixty-three".