102897206651 has 4 divisors (see below), whose sum is σ = 102903553872. Its totient is φ = 102890859432.

The previous prime is 102897206627. The next prime is 102897206653. The reversal of 102897206651 is 156602798201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102897206651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102897206596 and 102897206605.

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 (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3149231 + ... + 3181736.

It is an arithmetic number, because the mean of its divisors is an integer number (25725888468).

Almost surely, 2^102897206651 is an apocalyptic number.

102897206651 is a deficient number, since it is larger than the sum of its proper divisors (6347221).

102897206651 is an equidigital number, since it uses as much as digits as its factorization.

102897206651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6347220.

The product of its (nonzero) digits is 362880, while the sum is 47.

The spelling of 102897206651 in words is "one hundred two billion, eight hundred ninety-seven million, two hundred six thousand, six hundred fifty-one".