2413987981981 has 2 divisors, whose sum is σ = 2413987981982. Its totient is φ = 2413987981980.

The previous prime is 2413987981973. The next prime is 2413987982017. The reversal of 2413987981981 is 1891897893142.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1721986940025 + 692001041956 = 1312245^2 + 831866^2 .

It is a cyclic number.

It is not a de Polignac number, because 2413987981981 - 2³ = 2413987981973 is a prime.

It is a super-2 number, since 2×2413987981981² (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 2413987981981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2413987981081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1206993990990 + 1206993990991.

It is an arithmetic number, because the mean of its divisors is an integer number (1206993990991).

Almost surely, 2^{2413987981981} is an apocalyptic number.

It is an amenable number.

2413987981981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2413987981981 is an equidigital number, since it uses as much as digits as its factorization.

2413987981981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62705664, while the sum is 70.

The spelling of 2413987981981 in words is "two trillion, four hundred thirteen billion, nine hundred eighty-seven million, nine hundred eighty-one thousand, nine hundred eighty-one".