102551411474509 has 2 divisors, whose sum is σ = 102551411474510. Its totient is φ = 102551411474508.

The previous prime is 102551411474507. The next prime is 102551411474521. The reversal of 102551411474509 is 905474114155201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96857031510409 + 5694379964100 = 9841597^2 + 2386290^2 .

It is a cyclic number.

It is not a de Polignac number, because 102551411474509 - 2¹ = 102551411474507 is a prime.

It is a super-3 number, since 3×102551411474509³ (a number of 43 digits) contains 333 as substring.

Together with 102551411474507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102551411474507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51275705737254 + 51275705737255.

It is an arithmetic number, because the mean of its divisors is an integer number (51275705737255).

Almost surely, 2^{102551411474509} is an apocalyptic number.

It is an amenable number.

102551411474509 is a deficient number, since it is larger than the sum of its proper divisors (1).

102551411474509 is an equidigital number, since it uses as much as digits as its factorization.

102551411474509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008000, while the sum is 49.

The spelling of 102551411474509 in words is "one hundred two trillion, five hundred fifty-one billion, four hundred eleven million, four hundred seventy-four thousand, five hundred nine".