2021668054 has 8 divisors (see below), whose sum is σ = 3465716688. Its totient is φ = 866429160.

The previous prime is 2021668043. The next prime is 2021668073. The reversal of 2021668054 is 4508661202.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72202417 + ... + 72202444.

It is an arithmetic number, because the mean of its divisors is an integer number (433214586).

Almost surely, 2^2021668054 is an apocalyptic number.

2021668054 is a deficient number, since it is larger than the sum of its proper divisors (1444048634).

2021668054 is a wasteful number, since it uses less digits than its factorization.

2021668054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144404870.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 2021668054 is about 44962.9631363414. The cubic root of 2021668054 is about 1264.4547226806.

The spelling of 2021668054 in words is "two billion, twenty-one million, six hundred sixty-eight thousand, fifty-four".