107696861521 has 2 divisors, whose sum is σ = 107696861522. Its totient is φ = 107696861520.

The previous prime is 107696861507. The next prime is 107696861651. The reversal of 107696861521 is 125168696701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104952673296 + 2744188225 = 323964^2 + 52385^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-107696861521 is a prime.

It is a super-2 number, since 2×107696861521² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (107696861501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53848430760 + 53848430761.

It is an arithmetic number, because the mean of its divisors is an integer number (53848430761).

Almost surely, 2^107696861521 is an apocalyptic number.

It is an amenable number.

107696861521 is a deficient number, since it is larger than the sum of its proper divisors (1).

107696861521 is an equidigital number, since it uses as much as digits as its factorization.

107696861521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 52.

It can be divided in two parts, 1076968 and 61521, that added together give a square (1138489 = 1067²).

The spelling of 107696861521 in words is "one hundred seven billion, six hundred ninety-six million, eight hundred sixty-one thousand, five hundred twenty-one".