1020577989205 has 8 divisors (see below), whose sum is σ = 1296734386392. Its totient is φ = 768435191808.

The previous prime is 1020577989143. The next prime is 1020577989259. The reversal of 1020577989205 is 5029897750201.

It is a happy number.

1020577989205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 375050907396 + 645527081809 = 612414^2 + 803447^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1020577989205 - 2²⁵ = 1020544434773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6003399852 + ... + 6003400021.

It is an arithmetic number, because the mean of its divisors is an integer number (162091798299).

Almost surely, 2^{1020577989205} is an apocalyptic number.

It is an amenable number.

1020577989205 is a deficient number, since it is larger than the sum of its proper divisors (276156397187).

1020577989205 is a wasteful number, since it uses less digits than its factorization.

1020577989205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12006799895.

The product of its (nonzero) digits is 3175200, while the sum is 55.

The spelling of 1020577989205 in words is "one trillion, twenty billion, five hundred seventy-seven million, nine hundred eighty-nine thousand, two hundred five".