102063627661 has 4 divisors (see below), whose sum is σ = 102067291900. Its totient is φ = 102059963424.

The previous prime is 102063627641. The next prime is 102063627683. The reversal of 102063627661 is 166726360201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166726360201 = 17 ⋅9807432953.

It can be written as a sum of positive squares in 2 ways, for example, as 54181872900 + 47881754761 = 232770^2 + 218819^2 .

It is a cyclic number.

It is not a de Polignac number, because 102063627661 - 2²³ = 102055239053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102063627641) 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, 1790016 + ... + 1846153.

It is an arithmetic number, because the mean of its divisors is an integer number (25516822975).

Almost surely, 2^102063627661 is an apocalyptic number.

It is an amenable number.

102063627661 is a deficient number, since it is larger than the sum of its proper divisors (3664239).

102063627661 is an equidigital number, since it uses as much as digits as its factorization.

102063627661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664238.

The product of its (nonzero) digits is 108864, while the sum is 40.

Adding to 102063627661 its reverse (166726360201), we get a palindrome (268789987862).

The spelling of 102063627661 in words is "one hundred two billion, sixty-three million, six hundred twenty-seven thousand, six hundred sixty-one".