3128854804997 has 2 divisors, whose sum is σ = 3128854804998. Its totient is φ = 3128854804996.

The previous prime is 3128854804987. The next prime is 3128854805003. The reversal of 3128854804997 is 7994084588213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1837992987076 + 1290861817921 = 1355726^2 + 1136161^2 .

It is a cyclic number.

It is not a de Polignac number, because 3128854804997 - 2²² = 3128850610693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3128854804967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564427402498 + 1564427402499.

It is an arithmetic number, because the mean of its divisors is an integer number (1564427402499).

Almost surely, 2^{3128854804997} is an apocalyptic number.

It is an amenable number.

3128854804997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3128854804997 is an equidigital number, since it uses as much as digits as its factorization.

3128854804997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139345920, while the sum is 68.

The spelling of 3128854804997 in words is "three trillion, one hundred twenty-eight billion, eight hundred fifty-four million, eight hundred four thousand, nine hundred ninety-seven".