2021426466788 has 12 divisors (see below), whose sum is σ = 3537524747820. Its totient is φ = 1010705110272.

The previous prime is 2021426466781. The next prime is 2021426466809. The reversal of 2021426466788 is 8876646241202.

It can be written as a sum of positive squares in 2 ways, for example, as 1232228763364 + 789197703424 = 1110058^2 + 888368^2 .

It is not an unprimeable number, because it can be changed into a prime (2021426466781) 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, 1452581 + ... + 2480492.

It is an arithmetic number, because the mean of its divisors is an integer number (294793728985).

Almost surely, 2^{2021426466788} is an apocalyptic number.

It is an amenable number.

2021426466788 is a deficient number, since it is larger than the sum of its proper divisors (1516098281032).

2021426466788 is a wasteful number, since it uses less digits than its factorization.

2021426466788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061566 (or 4061564 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 56.

The spelling of 2021426466788 in words is "two trillion, twenty-one billion, four hundred twenty-six million, four hundred sixty-six thousand, seven hundred eighty-eight".