107961970725649 has 2 divisors, whose sum is σ = 107961970725650. Its totient is φ = 107961970725648.

The previous prime is 107961970725619. The next prime is 107961970725691. The reversal of 107961970725649 is 946527079169701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63970163478225 + 43991807247424 = 7998135^2 + 6632632^2 .

It is a cyclic number.

It is not a de Polignac number, because 107961970725649 - 2⁵ = 107961970725617 is a prime.

It is a super-3 number, since 3×107961970725649³ (a number of 43 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (107961970725619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53980985362824 + 53980985362825.

It is an arithmetic number, because the mean of its divisors is an integer number (53980985362825).

Almost surely, 2^{107961970725649} is an apocalyptic number.

It is an amenable number.

107961970725649 is a deficient number, since it is larger than the sum of its proper divisors (1).

107961970725649 is an equidigital number, since it uses as much as digits as its factorization.

107961970725649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360067680, while the sum is 73.

The spelling of 107961970725649 in words is "one hundred seven trillion, nine hundred sixty-one billion, nine hundred seventy million, seven hundred twenty-five thousand, six hundred forty-nine".