2021208978037 has 8 divisors (see below), whose sum is σ = 2109108231360. Its totient is φ = 1933311441600.

The previous prime is 2021208978029. The next prime is 2021208978167. The reversal of 2021208978037 is 7308798021202.

It is a happy number.

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

It is not a de Polignac number, because 2021208978037 - 2³ = 2021208978029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021208978017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2363037 + ... + 3102637.

It is an arithmetic number, because the mean of its divisors is an integer number (263638528920).

Almost surely, 2^{2021208978037} is an apocalyptic number.

It is an amenable number.

2021208978037 is a deficient number, since it is larger than the sum of its proper divisors (87899253323).

2021208978037 is a wasteful number, since it uses less digits than its factorization.

2021208978037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858443.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 2021208978037 in words is "two trillion, twenty-one billion, two hundred eight million, nine hundred seventy-eight thousand, thirty-seven".