997790848001 has 2 divisors, whose sum is σ = 997790848002. Its totient is φ = 997790848000.

The previous prime is 997790847983. The next prime is 997790848063. The reversal of 997790848001 is 100848097799.

It is an a-pointer prime, because the next prime (997790848063) can be obtained adding 997790848001 to its sum of digits (62).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 993799641025 + 3991206976 = 996895^2 + 63176^2 .

It is a cyclic number.

It is not a de Polignac number, because 997790848001 - 2¹⁰ = 997790846977 is a prime.

It is not a weakly prime, because it can be changed into another prime (997790848501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498895424000 + 498895424001.

It is an arithmetic number, because the mean of its divisors is an integer number (498895424001).

Almost surely, 2^997790848001 is an apocalyptic number.

It is an amenable number.

997790848001 is a deficient number, since it is larger than the sum of its proper divisors (1).

997790848001 is an equidigital number, since it uses as much as digits as its factorization.

997790848001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9144576, while the sum is 62.

The spelling of 997790848001 in words is "nine hundred ninety-seven billion, seven hundred ninety million, eight hundred forty-eight thousand, one".