2154688006874 has 8 divisors (see below), whose sum is σ = 3480649857300. Its totient is φ = 994471387776.

The previous prime is 2154688006873. The next prime is 2154688007027. The reversal of 2154688006874 is 4786008864512.

It can be written as a sum of positive squares in 2 ways, for example, as 2046167176249 + 108520830625 = 1430443^2 + 329425^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2154688006873) 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, 41436307799 + ... + 41436307850.

Almost surely, 2^{2154688006874} is an apocalyptic number.

2154688006874 is a deficient number, since it is larger than the sum of its proper divisors (1325961850426).

2154688006874 is a wasteful number, since it uses less digits than its factorization.

2154688006874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82872615664.

The product of its (nonzero) digits is 20643840, while the sum is 59.

The spelling of 2154688006874 in words is "two trillion, one hundred fifty-four billion, six hundred eighty-eight million, six thousand, eight hundred seventy-four".