2141666577544 has 64 divisors (see below), whose sum is σ = 4458213048240. Its totient is φ = 958210007040.

The previous prime is 2141666577541. The next prime is 2141666577569. The reversal of 2141666577544 is 4457756661412.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 619428813444 + 1522237764100 = 787038^2 + 1233790^2 .

It is not an unprimeable number, because it can be changed into a prime (2141666577541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 930129 + ... + 2269024.

Almost surely, 2^{2141666577544} is an apocalyptic number.

It is an amenable number.

2141666577544 is an abundant number, since it is smaller than the sum of its proper divisors (2316546470696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2141666577544 is a wasteful number, since it uses less digits than its factorization.

2141666577544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199370 (or 3199366 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 58.

The spelling of 2141666577544 in words is "two trillion, one hundred forty-one billion, six hundred sixty-six million, five hundred seventy-seven thousand, five hundred forty-four".