2527934315981 has 2 divisors, whose sum is σ = 2527934315982. Its totient is φ = 2527934315980.

The previous prime is 2527934315971. The next prime is 2527934315993. The reversal of 2527934315981 is 1895134397252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1325512413481 + 1202421902500 = 1151309^2 + 1096550^2 .

It is a cyclic number.

It is not a de Polignac number, because 2527934315981 - 2¹⁰ = 2527934314957 is a prime.

It is a super-2 number, since 2×2527934315981² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2527934315981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2527934315971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1263967157990 + 1263967157991.

It is an arithmetic number, because the mean of its divisors is an integer number (1263967157991).

Almost surely, 2^{2527934315981} is an apocalyptic number.

It is an amenable number.

2527934315981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2527934315981 is an equidigital number, since it uses as much as digits as its factorization.

2527934315981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16329600, while the sum is 59.

The spelling of 2527934315981 in words is "two trillion, five hundred twenty-seven billion, nine hundred thirty-four million, three hundred fifteen thousand, nine hundred eighty-one".