1021163005264 has 10 divisors (see below), whose sum is σ = 1978503322730. Its totient is φ = 510581502624.

The previous prime is 1021163005249. The next prime is 1021163005297. The reversal of 1021163005264 is 4625003611201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1014435724864 + 6727280400 = 1007192^2 + 82020^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 31911343899 + ... + 31911343930.

It is an arithmetic number, because the mean of its divisors is an integer number (197850332273).

Almost surely, 2^{1021163005264} is an apocalyptic number.

It is an amenable number.

1021163005264 is a deficient number, since it is larger than the sum of its proper divisors (957340317466).

1021163005264 is an equidigital number, since it uses as much as digits as its factorization.

1021163005264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63822687837 (or 63822687831 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 1021163005264 its reverse (4625003611201), we get a palindrome (5646166616465).

The spelling of 1021163005264 in words is "one trillion, twenty-one billion, one hundred sixty-three million, five thousand, two hundred sixty-four".