2011041644545 has 16 divisors (see below), whose sum is σ = 2496534158160. Its totient is φ = 1553313577984.

The previous prime is 2011041644509. The next prime is 2011041644587. The reversal of 2011041644545 is 5454461401102.

It is a Cunningham number, because it is equal to 1418112²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 956501604081 + 1054540040464 = 978009^2 + 1026908^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011041644545 - 2²¹ = 2011039547393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5730669 + ... + 6071461.

It is an arithmetic number, because the mean of its divisors is an integer number (156033384885).

Almost surely, 2^{2011041644545} is an apocalyptic number.

It is an amenable number.

2011041644545 is a deficient number, since it is larger than the sum of its proper divisors (485492513615).

2011041644545 is a wasteful number, since it uses less digits than its factorization.

2011041644545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381524.

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 2011041644545 in words is "two trillion, eleven billion, forty-one million, six hundred forty-four thousand, five hundred forty-five".