1020564404363 has 24 divisors (see below), whose sum is σ = 1199463874704. Its totient is φ = 865731048000.

The previous prime is 1020564404359. The next prime is 1020564404389. The reversal of 1020564404363 is 3634044650201.

It is not a de Polignac number, because 1020564404363 - 2² = 1020564404359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020564404333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11621048 + ... + 11708538.

It is an arithmetic number, because the mean of its divisors is an integer number (49977661446).

Almost surely, 2^{1020564404363} is an apocalyptic number.

1020564404363 is a deficient number, since it is larger than the sum of its proper divisors (178899470341).

1020564404363 is a wasteful number, since it uses less digits than its factorization.

1020564404363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89963 (or 89956 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 1020564404363 in words is "one trillion, twenty billion, five hundred sixty-four million, four hundred four thousand, three hundred sixty-three".