102155312533 has 2 divisors, whose sum is σ = 102155312534. Its totient is φ = 102155312532.

The previous prime is 102155312503. The next prime is 102155312537. The reversal of 102155312533 is 335213551201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69286347729 + 32868964804 = 263223^2 + 181298^2 .

It is a cyclic number.

It is not a de Polignac number, because 102155312533 - 2²⁹ = 101618441621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102155312495 and 102155312504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102155312537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51077656266 + 51077656267.

It is an arithmetic number, because the mean of its divisors is an integer number (51077656267).

Almost surely, 2^102155312533 is an apocalyptic number.

It is an amenable number.

102155312533 is a deficient number, since it is larger than the sum of its proper divisors (1).

102155312533 is an equidigital number, since it uses as much as digits as its factorization.

102155312533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 31.

Adding to 102155312533 its reverse (335213551201), we get a palindrome (437368863734).

The spelling of 102155312533 in words is "one hundred two billion, one hundred fifty-five million, three hundred twelve thousand, five hundred thirty-three".