10520554040657 has 2 divisors, whose sum is σ = 10520554040658. Its totient is φ = 10520554040656.

The previous prime is 10520554040603. The next prime is 10520554040687. The reversal of 10520554040657 is 75604045502501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10460411873536 + 60142167121 = 3234256^2 + 245239^2 .

It is an emirp because it is prime and its reverse (75604045502501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10520554040657 - 2¹² = 10520554036561 is a prime.

It is a super-2 number, since 2×10520554040657² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10520554040687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5260277020328 + 5260277020329.

It is an arithmetic number, because the mean of its divisors is an integer number (5260277020329).

Almost surely, 2^{10520554040657} is an apocalyptic number.

It is an amenable number.

10520554040657 is a deficient number, since it is larger than the sum of its proper divisors (1).

10520554040657 is an equidigital number, since it uses as much as digits as its factorization.

10520554040657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840000, while the sum is 44.

The spelling of 10520554040657 in words is "ten trillion, five hundred twenty billion, five hundred fifty-four million, forty thousand, six hundred fifty-seven".