1020452621305 has 16 divisors (see below), whose sum is σ = 1318852687824. Its totient is φ = 753499918080.

The previous prime is 1020452621291. The next prime is 1020452621387. The reversal of 1020452621305 is 5031262540201.

It can be written as a sum of positive squares in 8 ways, for example, as 177897524841 + 842555096464 = 421779^2 + 917908^2 .

It is not a de Polignac number, because 1020452621305 - 2⁵ = 1020452621273 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86775 + ... + 1431235.

It is an arithmetic number, because the mean of its divisors is an integer number (82428292989).

Almost surely, 2^{1020452621305} is an apocalyptic number.

It is an amenable number.

1020452621305 is a deficient number, since it is larger than the sum of its proper divisors (298400066519).

1020452621305 is a wasteful number, since it uses less digits than its factorization.

1020452621305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356156.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 1020452621305 in words is "one trillion, twenty billion, four hundred fifty-two million, six hundred twenty-one thousand, three hundred five".