36687613477 has 6 divisors (see below), whose sum is σ = 37680367218. Its totient is φ = 35694922752.

The previous prime is 36687613447. The next prime is 36687613517. The reversal of 36687613477 is 77431678663.

It can be written as a sum of positive squares in 3 ways, for example, as 15798981636 + 20888631841 = 125694^2 + 144529^2 .

It is a de Polignac number, because none of the positive numbers 2^k-36687613477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36687613447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1149349 + ... + 1180837.

It is an arithmetic number, because the mean of its divisors is an integer number (6280061203).

Almost surely, 2^36687613477 is an apocalyptic number.

36687613477 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

36687613477 is a deficient number, since it is larger than the sum of its proper divisors (992753741).

36687613477 is an frugal number, since it uses more digits than its factorization.

36687613477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63015 (or 31526 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 58.

The spelling of 36687613477 in words is "thirty-six billion, six hundred eighty-seven million, six hundred thirteen thousand, four hundred seventy-seven".