36400036987 has 4 divisors (see below), whose sum is σ = 36420385360. Its totient is φ = 36379688616.

The previous prime is 36400036949. The next prime is 36400036991. The reversal of 36400036987 is 78963000463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78963000463 = 457 ⋅172785559.

It is a cyclic number.

It is not a de Polignac number, because 36400036987 - 2⁷ = 36400036859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36400036997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10171503 + ... + 10175080.

It is an arithmetic number, because the mean of its divisors is an integer number (9105096340).

Almost surely, 2^36400036987 is an apocalyptic number.

36400036987 is a deficient number, since it is larger than the sum of its proper divisors (20348373).

36400036987 is a wasteful number, since it uses less digits than its factorization.

36400036987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20348372.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 36400036987 in words is "thirty-six billion, four hundred million, thirty-six thousand, nine hundred eighty-seven".