101253565949 has 2 divisors, whose sum is σ = 101253565950. Its totient is φ = 101253565948.

The previous prime is 101253565943. The next prime is 101253565981. The reversal of 101253565949 is 949565352101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74915521849 + 26338044100 = 273707^2 + 162290^2 .

It is a cyclic number.

It is not a de Polignac number, because 101253565949 - 2¹² = 101253561853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101253565897 and 101253565906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101253565943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50626782974 + 50626782975.

It is an arithmetic number, because the mean of its divisors is an integer number (50626782975).

Almost surely, 2^101253565949 is an apocalyptic number.

It is an amenable number.

101253565949 is a deficient number, since it is larger than the sum of its proper divisors (1).

101253565949 is an equidigital number, since it uses as much as digits as its factorization.

101253565949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458000, while the sum is 50.

The spelling of 101253565949 in words is "one hundred one billion, two hundred fifty-three million, five hundred sixty-five thousand, nine hundred forty-nine".