42846828661837 has 2 divisors, whose sum is σ = 42846828661838. Its totient is φ = 42846828661836.

The previous prime is 42846828661831. The next prime is 42846828661877. The reversal of 42846828661837 is 73816682864824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22218345485956 + 20628483175881 = 4713634^2 + 4541859^2 .

It is a cyclic number.

It is not a de Polignac number, because 42846828661837 - 2³⁹ = 42297072847949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42846828661837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42846828661831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21423414330918 + 21423414330919.

It is an arithmetic number, because the mean of its divisors is an integer number (21423414330919).

Almost surely, 2^{42846828661837} is an apocalyptic number.

It is an amenable number.

42846828661837 is a deficient number, since it is larger than the sum of its proper divisors (1).

42846828661837 is an equidigital number, since it uses as much as digits as its factorization.

42846828661837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1189085184, while the sum is 73.

The spelling of 42846828661837 in words is "forty-two trillion, eight hundred forty-six billion, eight hundred twenty-eight million, six hundred sixty-one thousand, eight hundred thirty-seven".