35661670073 has 4 divisors (see below), whose sum is σ = 35739704820. Its totient is φ = 35583635328.

The previous prime is 35661669991. The next prime is 35661670081. The reversal of 35661670073 is 37007616653.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33766635049 + 1895035024 = 183757^2 + 43532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-35661670073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35661670273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39016688 + ... + 39017601.

It is an arithmetic number, because the mean of its divisors is an integer number (8934926205).

Almost surely, 2^35661670073 is an apocalyptic number.

It is an amenable number.

35661670073 is a deficient number, since it is larger than the sum of its proper divisors (78034747).

35661670073 is an equidigital number, since it uses as much as digits as its factorization.

35661670073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78034746.

The product of its (nonzero) digits is 476280, while the sum is 44.

The spelling of 35661670073 in words is "thirty-five billion, six hundred sixty-one million, six hundred seventy thousand, seventy-three".