102871385465 has 4 divisors (see below), whose sum is σ = 123445662564. Its totient is φ = 82297108368.

The previous prime is 102871385429. The next prime is 102871385509. The reversal of 102871385465 is 564583178201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564583178201 = 7 ⋅80654739743.

It can be written as a sum of positive squares in 2 ways, for example, as 17801163241 + 85070222224 = 133421^2 + 291668^2 .

It is a cyclic number.

It is not a de Polignac number, because 102871385465 - 2¹⁸ = 102871123321 is a prime.

It is a super-2 number, since 2×102871385465² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10287138542 + ... + 10287138551.

It is an arithmetic number, because the mean of its divisors is an integer number (30861415641).

Almost surely, 2^102871385465 is an apocalyptic number.

It is an amenable number.

102871385465 is a deficient number, since it is larger than the sum of its proper divisors (20574277099).

102871385465 is an equidigital number, since it uses as much as digits as its factorization.

102871385465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20574277098.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 102871385465 in words is "one hundred two billion, eight hundred seventy-one million, three hundred eighty-five thousand, four hundred sixty-five".