36481951643 has 4 divisors (see below), whose sum is σ = 36569021160. Its totient is φ = 36394882128.

The previous prime is 36481951631. The next prime is 36481951651. The reversal of 36481951643 is 34615918463.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 36481951643 - 2²⁸ = 36213516187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36481951591 and 36481951600.

It is not an unprimeable number, because it can be changed into a prime (36481951613) 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 3 ways as a sum of consecutive naturals, for example, 43534130 + ... + 43534967.

It is an arithmetic number, because the mean of its divisors is an integer number (9142255290).

Almost surely, 2^36481951643 is an apocalyptic number.

36481951643 is a deficient number, since it is larger than the sum of its proper divisors (87069517).

36481951643 is an equidigital number, since it uses as much as digits as its factorization.

36481951643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87069516.

The product of its digits is 1866240, while the sum is 50.

The spelling of 36481951643 in words is "thirty-six billion, four hundred eighty-one million, nine hundred fifty-one thousand, six hundred forty-three".