36491987985 has 16 divisors (see below), whose sum is σ = 58441824960. Its totient is φ = 19444178880.

The previous prime is 36491987963. The next prime is 36491988007. The reversal of 36491987985 is 58978919463.

It is an interprime number because it is at equal distance from previous prime (36491987963) and next prime (36491988007).

It is not a de Polignac number, because 36491987985 - 2¹⁰ = 36491986961 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1121851 + ... + 1153920.

It is an arithmetic number, because the mean of its divisors is an integer number (3652614060).

Almost surely, 2^36491987985 is an apocalyptic number.

It is an amenable number.

36491987985 is a deficient number, since it is larger than the sum of its proper divisors (21949836975).

36491987985 is a wasteful number, since it uses less digits than its factorization.

36491987985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276848.

The product of its digits is 117573120, while the sum is 69.

The spelling of 36491987985 in words is "thirty-six billion, four hundred ninety-one million, nine hundred eighty-seven thousand, nine hundred eighty-five".