102509550097 has 4 divisors (see below), whose sum is σ = 105280078516. Its totient is φ = 99739021680.

The previous prime is 102509550053. The next prime is 102509550109. The reversal of 102509550097 is 790055905201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 790055905201 = 1471 ⋅537087631.

It can be written as a sum of positive squares in 2 ways, for example, as 89591863761 + 12917686336 = 299319^2 + 113656^2 .

It is a cyclic number.

It is not a de Polignac number, because 102509550097 - 2³¹ = 100362066449 is a prime.

It is a super-2 number, since 2×102509550097² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102509550037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385264154 + ... + 1385264227.

It is an arithmetic number, because the mean of its divisors is an integer number (26320019629).

Almost surely, 2^102509550097 is an apocalyptic number.

It is an amenable number.

102509550097 is a deficient number, since it is larger than the sum of its proper divisors (2770528419).

102509550097 is an equidigital number, since it uses as much as digits as its factorization.

102509550097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2770528418.

The product of its (nonzero) digits is 141750, while the sum is 43.

The spelling of 102509550097 in words is "one hundred two billion, five hundred nine million, five hundred fifty thousand, ninety-seven".