9690994094545 has 4 divisors (see below), whose sum is σ = 11629192913460. Its totient is φ = 7752795275632.

The previous prime is 9690994094539. The next prime is 9690994094549. The reversal of 9690994094545 is 5454904990969.

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 2244639196944 + 7446354897601 = 1498212^2 + 2728801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9690994094545 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9690994094549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 969099409450 + ... + 969099409459.

It is an arithmetic number, because the mean of its divisors is an integer number (2907298228365).

Almost surely, 2^{9690994094545} is an apocalyptic number.

It is an amenable number.

9690994094545 is a deficient number, since it is larger than the sum of its proper divisors (1938198818915).

9690994094545 is a wasteful number, since it uses less digits than its factorization.

9690994094545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938198818914.

The product of its (nonzero) digits is 566870400, while the sum is 73.

The spelling of 9690994094545 in words is "nine trillion, six hundred ninety billion, nine hundred ninety-four million, ninety-four thousand, five hundred forty-five".