84436734133786 has 4 divisors (see below), whose sum is σ = 126655101200682. Its totient is φ = 42218367066892.

The previous prime is 84436734133781. The next prime is 84436734133861. The reversal of 84436734133786 is 68733143763448.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 53747006625225 + 30689727508561 = 7331235^2 + 5539831^2 .

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (84436734133781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21109183533445 + ... + 21109183533448.

Almost surely, 2^{84436734133786} is an apocalyptic number.

84436734133786 is a deficient number, since it is larger than the sum of its proper divisors (42218367066896).

84436734133786 is a wasteful number, since it uses less digits than its factorization.

84436734133786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42218367066895.

The product of its digits is 585252864, while the sum is 67.

The spelling of 84436734133786 in words is "eighty-four trillion, four hundred thirty-six billion, seven hundred thirty-four million, one hundred thirty-three thousand, seven hundred eighty-six".