102532906621 has 2 divisors, whose sum is σ = 102532906622. Its totient is φ = 102532906620.

The previous prime is 102532906613. The next prime is 102532906681. The reversal of 102532906621 is 126609235201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55013702500 + 47519204121 = 234550^2 + 217989^2 .

It is an emirp because it is prime and its reverse (126609235201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102532906621 - 2³ = 102532906613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102532906681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51266453310 + 51266453311.

It is an arithmetic number, because the mean of its divisors is an integer number (51266453311).

Almost surely, 2^102532906621 is an apocalyptic number.

It is an amenable number.

102532906621 is a deficient number, since it is larger than the sum of its proper divisors (1).

102532906621 is an equidigital number, since it uses as much as digits as its factorization.

102532906621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 102532906621 in words is "one hundred two billion, five hundred thirty-two million, nine hundred six thousand, six hundred twenty-one".