11020641500465 has 4 divisors (see below), whose sum is σ = 13224769800564. Its totient is φ = 8816513200368.

The previous prime is 11020641500423. The next prime is 11020641500467. The reversal of 11020641500465 is 56400514602011.

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 6672219628096 + 4348421872369 = 2583064^2 + 2085287^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11020641500465 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11020641500467) 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, 1102064150042 + ... + 1102064150051.

It is an arithmetic number, because the mean of its divisors is an integer number (3306192450141).

Almost surely, 2^{11020641500465} is an apocalyptic number.

It is an amenable number.

11020641500465 is a deficient number, since it is larger than the sum of its proper divisors (2204128300099).

11020641500465 is an equidigital number, since it uses as much as digits as its factorization.

11020641500465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204128300098.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 11020641500465 in words is "eleven trillion, twenty billion, six hundred forty-one million, five hundred thousand, four hundred sixty-five".