102897206657 has 6 divisors (see below), whose sum is σ = 119696750658. Its totient is φ = 88197605664.

The previous prime is 102897206653. The next prime is 102897206707. The reversal of 102897206657 is 756602798201.

It can be written as a sum of positive squares in only one way, i.e., 96627100801 + 6270105856 = 310849^2 + 79184^2 .

It is not a de Polignac number, because 102897206657 - 2² = 102897206653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102897206599 and 102897206608.

It is not an unprimeable number, because it can be changed into a prime (102897206653) 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 5 ways as a sum of consecutive naturals, for example, 1049971448 + ... + 1049971545.

It is an arithmetic number, because the mean of its divisors is an integer number (19949458443).

Almost surely, 2^102897206657 is an apocalyptic number.

It is an amenable number.

102897206657 is a deficient number, since it is larger than the sum of its proper divisors (16799544001).

102897206657 is an equidigital number, since it uses as much as digits as its factorization.

102897206657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099943007 (or 2099943000 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 102897206657 in words is "one hundred two billion, eight hundred ninety-seven million, two hundred six thousand, six hundred fifty-seven".