36821690249 has 2 divisors, whose sum is σ = 36821690250. Its totient is φ = 36821690248.

The previous prime is 36821690179. The next prime is 36821690299. The reversal of 36821690249 is 94209612863.

36821690249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (36821690299) can be obtained adding 36821690249 to its sum of digits (50).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20573599225 + 16248091024 = 143435^2 + 127468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36821690249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 36821690197 and 36821690206.

It is not a weakly prime, because it can be changed into another prime (36821690299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18410845124 + 18410845125.

It is an arithmetic number, because the mean of its divisors is an integer number (18410845125).

Almost surely, 2^36821690249 is an apocalyptic number.

It is an amenable number.

36821690249 is a deficient number, since it is larger than the sum of its proper divisors (1).

36821690249 is an equidigital number, since it uses as much as digits as its factorization.

36821690249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 36821690249 in words is "thirty-six billion, eight hundred twenty-one million, six hundred ninety thousand, two hundred forty-nine".