102920980961 has 2 divisors, whose sum is σ = 102920980962. Its totient is φ = 102920980960.

The previous prime is 102920980931. The next prime is 102920980963. The reversal of 102920980961 is 169089029201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80858334736 + 22062646225 = 284356^2 + 148535^2 .

It is a cyclic number.

It is not a de Polignac number, because 102920980961 - 2¹⁴ = 102920964577 is a prime.

Together with 102920980963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102920980963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51460490480 + 51460490481.

It is an arithmetic number, because the mean of its divisors is an integer number (51460490481).

Almost surely, 2^102920980961 is an apocalyptic number.

It is an amenable number.

102920980961 is a deficient number, since it is larger than the sum of its proper divisors (1).

102920980961 is an equidigital number, since it uses as much as digits as its factorization.

102920980961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 47.

The spelling of 102920980961 in words is "one hundred two billion, nine hundred twenty million, nine hundred eighty thousand, nine hundred sixty-one".