36878438308645 has 32 divisors (see below), whose sum is σ = 46124888767200. Its totient is φ = 28270993637376.

The previous prime is 36878438308601. The next prime is 36878438308667. The reversal of 36878438308645 is 54680383487863.

It is a Cunningham number, because it is equal to 6072762²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 506912672484 + 36371525636161 = 711978^2 + 6030881^2 .

It is a cyclic number.

It is not a de Polignac number, because 36878438308645 - 2⁴¹ = 34679415053093 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87135301 + ... + 87557509.

It is an arithmetic number, because the mean of its divisors is an integer number (1441402773975).

Almost surely, 2^{36878438308645} is an apocalyptic number.

It is an amenable number.

36878438308645 is a deficient number, since it is larger than the sum of its proper divisors (9246450458555).

36878438308645 is a wasteful number, since it uses less digits than its factorization.

36878438308645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426777.

The product of its (nonzero) digits is 2229534720, while the sum is 73.

The spelling of 36878438308645 in words is "thirty-six trillion, eight hundred seventy-eight billion, four hundred thirty-eight million, three hundred eight thousand, six hundred forty-five".