1797632630977 has 2 divisors, whose sum is σ = 1797632630978. Its totient is φ = 1797632630976.

The previous prime is 1797632630957. The next prime is 1797632630999. The reversal of 1797632630977 is 7790362367971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1389383195841 + 408249435136 = 1178721^2 + 638944^2 .

It is a cyclic number.

It is not a de Polignac number, because 1797632630977 - 2²³ = 1797624242369 is a prime.

It is not a weakly prime, because it can be changed into another prime (1797632630947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 898816315488 + 898816315489.

It is an arithmetic number, because the mean of its divisors is an integer number (898816315489).

Almost surely, 2^{1797632630977} is an apocalyptic number.

It is an amenable number.

1797632630977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1797632630977 is an equidigital number, since it uses as much as digits as its factorization.

1797632630977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126023688, while the sum is 67.

The spelling of 1797632630977 in words is "one trillion, seven hundred ninety-seven billion, six hundred thirty-two million, six hundred thirty thousand, nine hundred seventy-seven".