1021331940579 has 12 divisors (see below), whose sum is σ = 1475305402896. Its totient is φ = 680865734832.

The previous prime is 1021331940529. The next prime is 1021331940583. The reversal of 1021331940579 is 9750491331201.

1021331940579 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 3 + 31 + 9 + 40 + 579 = 666.

It is not a de Polignac number, because 1021331940579 - 2⁹ = 1021331940067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021331940529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1558647 + ... + 2114720.

It is an arithmetic number, because the mean of its divisors is an integer number (122942116908).

Almost surely, 2^{1021331940579} is an apocalyptic number.

1021331940579 is a deficient number, since it is larger than the sum of its proper divisors (453973462317).

1021331940579 is a wasteful number, since it uses less digits than its factorization.

1021331940579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704266 (or 3704263 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The spelling of 1021331940579 in words is "one trillion, twenty-one billion, three hundred thirty-one million, nine hundred forty thousand, five hundred seventy-nine".