36406646642 has 8 divisors (see below), whose sum is σ = 54663882156. Its totient is φ = 18185352592.

The previous prime is 36406646629. The next prime is 36406646657. The reversal of 36406646642 is 24664660463.

It can be written as a sum of positive squares in 2 ways, for example, as 30993954601 + 5412692041 = 176051^2 + 73571^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8982833 + ... + 8986884.

Almost surely, 2^36406646642 is an apocalyptic number.

36406646642 is a deficient number, since it is larger than the sum of its proper divisors (18257235514).

36406646642 is a wasteful number, since it uses less digits than its factorization.

36406646642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17970732.

The product of its (nonzero) digits is 2985984, while the sum is 47.

The spelling of 36406646642 in words is "thirty-six billion, four hundred six million, six hundred forty-six thousand, six hundred forty-two".