120873513617 has 2 divisors, whose sum is σ = 120873513618. Its totient is φ = 120873513616.

The previous prime is 120873513599. The next prime is 120873513637. The reversal of 120873513617 is 716315378021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68029158976 + 52844354641 = 260824^2 + 229879^2 .

It is a cyclic number.

It is not a de Polignac number, because 120873513617 - 2¹⁶ = 120873448081 is a prime.

It is a super-2 number, since 2×120873513617² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120873513637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60436756808 + 60436756809.

It is an arithmetic number, because the mean of its divisors is an integer number (60436756809).

Almost surely, 2^120873513617 is an apocalyptic number.

It is an amenable number.

120873513617 is a deficient number, since it is larger than the sum of its proper divisors (1).

120873513617 is an equidigital number, since it uses as much as digits as its factorization.

120873513617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 120873513617 in words is "one hundred twenty billion, eight hundred seventy-three million, five hundred thirteen thousand, six hundred seventeen".