102880555649 has 4 divisors (see below), whose sum is σ = 103050046464. Its totient is φ = 102711064836.

The previous prime is 102880555621. The next prime is 102880555763. The reversal of 102880555649 is 946555088201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102880555649 is a prime.

It is a super-2 number, since 2×102880555649² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102880555649.

It is not an unprimeable number, because it can be changed into a prime (102880555619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84744497 + ... + 84745710.

It is an arithmetic number, because the mean of its divisors is an integer number (25762511616).

Almost surely, 2^102880555649 is an apocalyptic number.

It is an amenable number.

102880555649 is a deficient number, since it is larger than the sum of its proper divisors (169490815).

102880555649 is an equidigital number, since it uses as much as digits as its factorization.

102880555649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169490814.

The product of its (nonzero) digits is 3456000, while the sum is 53.

The spelling of 102880555649 in words is "one hundred two billion, eight hundred eighty million, five hundred fifty-five thousand, six hundred forty-nine".