1020372819997 has 2 divisors, whose sum is σ = 1020372819998. Its totient is φ = 1020372819996.

The previous prime is 1020372819941. The next prime is 1020372820037. The reversal of 1020372819997 is 7999182730201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 618937799076 + 401435020921 = 786726^2 + 633589^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020372819997 - 2²⁷ = 1020238602269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020372819397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510186409998 + 510186409999.

It is an arithmetic number, because the mean of its divisors is an integer number (510186409999).

Almost surely, 2^{1020372819997} is an apocalyptic number.

It is an amenable number.

1020372819997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020372819997 is an equidigital number, since it uses as much as digits as its factorization.

1020372819997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3429216, while the sum is 58.

The spelling of 1020372819997 in words is "one trillion, twenty billion, three hundred seventy-two million, eight hundred nineteen thousand, nine hundred ninety-seven".