30900897698873 has 2 divisors, whose sum is σ = 30900897698874. Its totient is φ = 30900897698872.

The previous prime is 30900897698791. The next prime is 30900897698927. The reversal of 30900897698873 is 37889679800903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27142464084649 + 3758433614224 = 5209843^2 + 1938668^2 .

It is a cyclic number.

It is not a de Polignac number, because 30900897698873 - 2¹⁰ = 30900897697849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30900897698794 and 30900897698803.

It is not a weakly prime, because it can be changed into another prime (30900897698173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15450448849436 + 15450448849437.

It is an arithmetic number, because the mean of its divisors is an integer number (15450448849437).

Almost surely, 2^{30900897698873} is an apocalyptic number.

It is an amenable number.

30900897698873 is a deficient number, since it is larger than the sum of its proper divisors (1).

30900897698873 is an equidigital number, since it uses as much as digits as its factorization.

30900897698873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 987614208, while the sum is 77.

The spelling of 30900897698873 in words is "thirty trillion, nine hundred billion, eight hundred ninety-seven million, six hundred ninety-eight thousand, eight hundred seventy-three".