1023033163921 has 2 divisors, whose sum is σ = 1023033163922. Its totient is φ = 1023033163920.

The previous prime is 1023033163907. The next prime is 1023033163951. The reversal of 1023033163921 is 1293613303201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 823853936896 + 199179227025 = 907664^2 + 446295^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023033163921 - 2¹⁹ = 1023032639633 is a prime.

It is not a weakly prime, because it can be changed into another prime (1023033163951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511516581960 + 511516581961.

It is an arithmetic number, because the mean of its divisors is an integer number (511516581961).

Almost surely, 2^{1023033163921} is an apocalyptic number.

It is an amenable number.

1023033163921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023033163921 is an equidigital number, since it uses as much as digits as its factorization.

1023033163921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 34.

The spelling of 1023033163921 in words is "one trillion, twenty-three billion, thirty-three million, one hundred sixty-three thousand, nine hundred twenty-one".