2126217871674 has 80 divisors (see below), whose sum is σ = 5180601858432. Its totient is φ = 647869158432.

The previous prime is 2126217871643. The next prime is 2126217871699. The reversal of 2126217871674 is 4761787126212.

2126217871674 is a `hidden beast` number, since 2 + 1 + 2 + 621 + 7 + 8 + 7 + 1 + 6 + 7 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 2126217871674.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4684054 + ... + 5117889.

Almost surely, 2^{2126217871674} is an apocalyptic number.

2126217871674 is an abundant number, since it is smaller than the sum of its proper divisors (3054383986758).

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

2126217871674 is a wasteful number, since it uses less digits than its factorization.

2126217871674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9802073 (or 9802064 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The spelling of 2126217871674 in words is "two trillion, one hundred twenty-six billion, two hundred seventeen million, eight hundred seventy-one thousand, six hundred seventy-four".