8102145551 has 2 divisors, whose sum is σ = 8102145552. Its totient is φ = 8102145550.

The previous prime is 8102145497. The next prime is 8102145589. The reversal of 8102145551 is 1555412018.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8102145551 - 2³⁰ = 7028403727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8102105551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4051072775 + 4051072776.

It is an arithmetic number, because the mean of its divisors is an integer number (4051072776).

Almost surely, 2^8102145551 is an apocalyptic number.

8102145551 is a deficient number, since it is larger than the sum of its proper divisors (1).

8102145551 is an equidigital number, since it uses as much as digits as its factorization.

8102145551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8000, while the sum is 32.

The square root of 8102145551 is about 90011.9189385495. The cubic root of 8102145551 is about 2008.4761558930.

Adding to 8102145551 its reverse (1555412018), we get a palindrome (9657557569).

The spelling of 8102145551 in words is "eight billion, one hundred two million, one hundred forty-five thousand, five hundred fifty-one".