120987657711353 has 2 divisors, whose sum is σ = 120987657711354. Its totient is φ = 120987657711352.

The previous prime is 120987657711301. The next prime is 120987657711373. The reversal of 120987657711353 is 353117756789021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90952785864889 + 30034871846464 = 9536917^2 + 5480408^2 .

It is a cyclic number.

It is not a de Polignac number, because 120987657711353 - 2²⁰ = 120987656662777 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120987657711353.

It is not a weakly prime, because it can be changed into another prime (120987657711373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60493828855676 + 60493828855677.

It is an arithmetic number, because the mean of its divisors is an integer number (60493828855677).

Almost surely, 2^{120987657711353} is an apocalyptic number.

It is an amenable number.

120987657711353 is a deficient number, since it is larger than the sum of its proper divisors (1).

120987657711353 is an equidigital number, since it uses as much as digits as its factorization.

120987657711353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66679200, while the sum is 65.

The spelling of 120987657711353 in words is "one hundred twenty trillion, nine hundred eighty-seven billion, six hundred fifty-seven million, seven hundred eleven thousand, three hundred fifty-three".