1651948058897 has 2 divisors, whose sum is σ = 1651948058898. Its totient is φ = 1651948058896.

The previous prime is 1651948058879. The next prime is 1651948058921. The reversal of 1651948058897 is 7988508491561.

Together with previous prime (1651948058879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1627808532736 + 24139526161 = 1275856^2 + 155369^2 .

It is a cyclic number.

It is not a de Polignac number, because 1651948058897 - 2²⁴ = 1651931281681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1651948058897.

It is not a weakly prime, because it can be changed into another prime (1651948058807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825974029448 + 825974029449.

It is an arithmetic number, because the mean of its divisors is an integer number (825974029449).

Almost surely, 2^{1651948058897} is an apocalyptic number.

It is an amenable number.

1651948058897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1651948058897 is an equidigital number, since it uses as much as digits as its factorization.

1651948058897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174182400, while the sum is 71.

The spelling of 1651948058897 in words is "one trillion, six hundred fifty-one billion, nine hundred forty-eight million, fifty-eight thousand, eight hundred ninety-seven".