11445661520101 has 4 divisors (see below), whose sum is σ = 11602451404012. Its totient is φ = 11288871636192.

The previous prime is 11445661520057. The next prime is 11445661520107. The reversal of 11445661520101 is 10102516654411.

11445661520101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 6695001000900 + 4750660519201 = 2587470^2 + 2179601^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11445661520101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11445661520107) 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, 78394941846 + ... + 78394941991.

It is an arithmetic number, because the mean of its divisors is an integer number (2900612851003).

Almost surely, 2^{11445661520101} is an apocalyptic number.

It is an amenable number.

11445661520101 is a deficient number, since it is larger than the sum of its proper divisors (156789883911).

11445661520101 is an equidigital number, since it uses as much as digits as its factorization.

11445661520101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156789883910.

The product of its (nonzero) digits is 28800, while the sum is 37.

The spelling of 11445661520101 in words is "eleven trillion, four hundred forty-five billion, six hundred sixty-one million, five hundred twenty thousand, one hundred one".