2800000052981 has 2 divisors, whose sum is σ = 2800000052982. Its totient is φ = 2800000052980.

The previous prime is 2800000052977. The next prime is 2800000053031. The reversal of 2800000052981 is 1892500000082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2794109490481 + 5890562500 = 1671559^2 + 76750^2 .

It is a cyclic number.

It is not a de Polignac number, because 2800000052981 - 2² = 2800000052977 is a prime.

It is a super-2 number, since 2×2800000052981² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2800000052581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1400000026490 + 1400000026491.

It is an arithmetic number, because the mean of its divisors is an integer number (1400000026491).

Almost surely, 2^{2800000052981} is an apocalyptic number.

It is an amenable number.

2800000052981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2800000052981 is an equidigital number, since it uses as much as digits as its factorization.

2800000052981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 2800000052981 in words is "two trillion, eight hundred billion, fifty-two thousand, nine hundred eighty-one".