36667669978 has 16 divisors (see below), whose sum is σ = 55549593000. Its totient is φ = 18151402752.

The previous prime is 36667669963. The next prime is 36667669981. The reversal of 36667669978 is 87996676663.

It can be written as a sum of positive squares in 4 ways, for example, as 36063149409 + 604520569 = 189903^2 + 24587^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 36667669978.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215758 + ... + 346246.

Almost surely, 2^36667669978 is an apocalyptic number.

36667669978 is a deficient number, since it is larger than the sum of its proper divisors (18881923022).

36667669978 is a wasteful number, since it uses less digits than its factorization.

36667669978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131889.

The product of its digits is 740710656, while the sum is 73.

The spelling of 36667669978 in words is "thirty-six billion, six hundred sixty-seven million, six hundred sixty-nine thousand, nine hundred seventy-eight".