2581815022153 has 2 divisors, whose sum is σ = 2581815022154. Its totient is φ = 2581815022152.

The previous prime is 2581815022139. The next prime is 2581815022159. The reversal of 2581815022153 is 3512205181852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1923555407929 + 658259614224 = 1386923^2 + 811332^2 .

It is a cyclic number.

It is not a de Polignac number, because 2581815022153 - 2⁵ = 2581815022121 is a prime.

It is a super-2 number, since 2×2581815022153² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2581815022159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1290907511076 + 1290907511077.

It is an arithmetic number, because the mean of its divisors is an integer number (1290907511077).

Almost surely, 2^{2581815022153} is an apocalyptic number.

It is an amenable number.

2581815022153 is a deficient number, since it is larger than the sum of its proper divisors (1).

2581815022153 is an equidigital number, since it uses as much as digits as its factorization.

2581815022153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192000, while the sum is 43.

The spelling of 2581815022153 in words is "two trillion, five hundred eighty-one billion, eight hundred fifteen million, twenty-two thousand, one hundred fifty-three".