36821864650 has 24 divisors (see below), whose sum is σ = 68495514444. Its totient is φ = 14727273600.

The previous prime is 36821864627. The next prime is 36821864669. The reversal of 36821864650 is 5646812863.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 21135053641 + 15686811009 = 145379^2 + 125247^2 .

It is a junction number, because it is equal to n+sod(n) for n = 36821864594 and 36821864603.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 566214 + ... + 627886.

Almost surely, 2^36821864650 is an apocalyptic number.

36821864650 is a deficient number, since it is larger than the sum of its proper divisors (31673649794).

36821864650 is a wasteful number, since it uses less digits than its factorization.

36821864650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73626 (or 73621 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 36821864650 in words is "thirty-six billion, eight hundred twenty-one million, eight hundred sixty-four thousand, six hundred fifty".