36531420646 has 16 divisors (see below), whose sum is σ = 64081695744. Its totient is φ = 15292222344.

The previous prime is 36531420637. The next prime is 36531420659. The reversal of 36531420646 is 64602413563.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 36531420599 and 36531420608.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 30341110 + ... + 30342313.

It is an arithmetic number, because the mean of its divisors is an integer number (4005105984).

Almost surely, 2^36531420646 is an apocalyptic number.

36531420646 is a deficient number, since it is larger than the sum of its proper divisors (27550275098).

36531420646 is a wasteful number, since it uses less digits than its factorization.

36531420646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60683475.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 36531420646 in words is "thirty-six billion, five hundred thirty-one million, four hundred twenty thousand, six hundred forty-six".