36708231649 has 4 divisors (see below), whose sum is σ = 37120683780. Its totient is φ = 36295779520.

The previous prime is 36708231619. The next prime is 36708231661. The reversal of 36708231649 is 94613280763.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94613280763 = 431 ⋅219520373.

It can be written as a sum of positive squares in 2 ways, for example, as 18485121600 + 18223110049 = 135960^2 + 134993^2 .

It is a cyclic number.

It is not a de Polignac number, because 36708231649 - 2⁹ = 36708231137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36708231619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206225932 + ... + 206226109.

It is an arithmetic number, because the mean of its divisors is an integer number (9280170945).

Almost surely, 2^36708231649 is an apocalyptic number.

It is an amenable number.

36708231649 is a deficient number, since it is larger than the sum of its proper divisors (412452131).

36708231649 is an equidigital number, since it uses as much as digits as its factorization.

36708231649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412452130.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 36708231649 in words is "thirty-six billion, seven hundred eight million, two hundred thirty-one thousand, six hundred forty-nine".