102040252655641 has 4 divisors (see below), whose sum is σ = 108042620458932. Its totient is φ = 96037884852352.

The previous prime is 102040252655521. The next prime is 102040252655681. The reversal of 102040252655641 is 146556252040201.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 51912082640016 + 50128170015625 = 7205004^2 + 7080125^2 .

It is not a de Polignac number, because 102040252655641 - 2¹⁷ = 102040252524569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102040252655681) 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 3 ways as a sum of consecutive naturals, for example, 3001183901620 + ... + 3001183901653.

It is an arithmetic number, because the mean of its divisors is an integer number (27010655114733).

Almost surely, 2^{102040252655641} is an apocalyptic number.

It is an amenable number.

102040252655641 is a deficient number, since it is larger than the sum of its proper divisors (6002367803291).

102040252655641 is an equidigital number, since it uses as much as digits as its factorization.

102040252655641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6002367803290.

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 102040252655641 in words is "one hundred two trillion, forty billion, two hundred fifty-two million, six hundred fifty-five thousand, six hundred forty-one".