2461644452381 has 2 divisors, whose sum is σ = 2461644452382. Its totient is φ = 2461644452380.

The previous prime is 2461644452363. The next prime is 2461644452383. The reversal of 2461644452381 is 1832544461642.

2461644452381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1433263896100 + 1028380556281 = 1197190^2 + 1014091^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2461644452381 is a prime.

It is a super-2 number, since 2×2461644452381² (a number of 26 digits) contains 22 as substring.

Together with 2461644452383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2461644452383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1230822226190 + 1230822226191.

It is an arithmetic number, because the mean of its divisors is an integer number (1230822226191).

Almost surely, 2^{2461644452381} is an apocalyptic number.

It is an amenable number.

2461644452381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2461644452381 is an equidigital number, since it uses as much as digits as its factorization.

2461644452381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4423680, while the sum is 50.

The spelling of 2461644452381 in words is "two trillion, four hundred sixty-one billion, six hundred forty-four million, four hundred fifty-two thousand, three hundred eighty-one".