102642735961 has 4 divisors (see below), whose sum is σ = 103094906832. Its totient is φ = 102190565092.

The previous prime is 102642735947. The next prime is 102642735991. The reversal of 102642735961 is 169537246201.

It is a happy number.

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 not a de Polignac number, because 102642735961 - 2⁵ = 102642735929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102642735991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226085095 + ... + 226085548.

It is an arithmetic number, because the mean of its divisors is an integer number (25773726708).

Almost surely, 2^102642735961 is an apocalyptic number.

It is an amenable number.

102642735961 is a deficient number, since it is larger than the sum of its proper divisors (452170871).

102642735961 is an equidigital number, since it uses as much as digits as its factorization.

102642735961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452170870.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 102642735961 in words is "one hundred two billion, six hundred forty-two million, seven hundred thirty-five thousand, nine hundred sixty-one".