2555701006381 has 2 divisors, whose sum is σ = 2555701006382. Its totient is φ = 2555701006380.

The previous prime is 2555701006333. The next prime is 2555701006409. The reversal of 2555701006381 is 1836001075552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2551415209225 + 4285797156 = 1597315^2 + 65466^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2555701006381 is a prime.

It is a super-2 number, since 2×2555701006381² (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 (2555701006181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277850503190 + 1277850503191.

It is an arithmetic number, because the mean of its divisors is an integer number (1277850503191).

Almost surely, 2^{2555701006381} is an apocalyptic number.

It is an amenable number.

2555701006381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555701006381 is an equidigital number, since it uses as much as digits as its factorization.

2555701006381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252000, while the sum is 43.

The spelling of 2555701006381 in words is "two trillion, five hundred fifty-five billion, seven hundred one million, six thousand, three hundred eighty-one".