2832778005521 has 2 divisors, whose sum is σ = 2832778005522. Its totient is φ = 2832778005520.

The previous prime is 2832778005443. The next prime is 2832778005571. The reversal of 2832778005521 is 1255008772382.

It is an a-pointer prime, because the next prime (2832778005571) can be obtained adding 2832778005521 to its sum of digits (50).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2789197267921 + 43580737600 = 1670089^2 + 208760^2 .

It is a cyclic number.

It is not a de Polignac number, because 2832778005521 - 2²⁶ = 2832710896657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2832778005521.

It is not a weakly prime, because it can be changed into another prime (2832778005571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1416389002760 + 1416389002761.

It is an arithmetic number, because the mean of its divisors is an integer number (1416389002761).

Almost surely, 2^{2832778005521} is an apocalyptic number.

It is an amenable number.

2832778005521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2832778005521 is an equidigital number, since it uses as much as digits as its factorization.

2832778005521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1881600, while the sum is 50.

The spelling of 2832778005521 in words is "two trillion, eight hundred thirty-two billion, seven hundred seventy-eight million, five thousand, five hundred twenty-one".