5157711601621 has 2 divisors, whose sum is σ = 5157711601622. Its totient is φ = 5157711601620.

The previous prime is 5157711601589. The next prime is 5157711601639. The reversal of 5157711601621 is 1261061177515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4554122453521 + 603589148100 = 2134039^2 + 776910^2 .

It is a cyclic number.

It is not a de Polignac number, because 5157711601621 - 2⁵ = 5157711601589 is a prime.

It is a super-3 number, since 3×5157711601621³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5157711601421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2578855800810 + 2578855800811.

It is an arithmetic number, because the mean of its divisors is an integer number (2578855800811).

Almost surely, 2^{5157711601621} is an apocalyptic number.

It is an amenable number.

5157711601621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5157711601621 is an equidigital number, since it uses as much as digits as its factorization.

5157711601621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88200, while the sum is 43.

The spelling of 5157711601621 in words is "five trillion, one hundred fifty-seven billion, seven hundred eleven million, six hundred one thousand, six hundred twenty-one".