2021471868990 has 64 divisors (see below), whose sum is σ = 5577809900544. Its totient is φ = 459283934208.

The previous prime is 2021471868989. The next prime is 2021471869009. The reversal of 2021471868990 is 998681741202.

It is a self number, because there is not a number n which added to its sum of digits gives 2021471868990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28785459 + ... + 28855598.

It is an arithmetic number, because the mean of its divisors is an integer number (87153279696).

Almost surely, 2^{2021471868990} is an apocalyptic number.

2021471868990 is an abundant number, since it is smaller than the sum of its proper divisors (3556338031554).

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

2021471868990 is a wasteful number, since it uses less digits than its factorization.

2021471868990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57641241.

The product of its (nonzero) digits is 3483648, while the sum is 57.

The spelling of 2021471868990 in words is "two trillion, twenty-one billion, four hundred seventy-one million, eight hundred sixty-eight thousand, nine hundred ninety".