13657801061 has 2 divisors, whose sum is σ = 13657801062. Its totient is φ = 13657801060.

The previous prime is 13657801033. The next prime is 13657801121. The reversal of 13657801061 is 16010875631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7990572100 + 5667228961 = 89390^2 + 75281^2 .

It is a cyclic number.

It is not a de Polignac number, because 13657801061 - 2¹⁴ = 13657784677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13657501061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6828900530 + 6828900531.

It is an arithmetic number, because the mean of its divisors is an integer number (6828900531).

Almost surely, 2^13657801061 is an apocalyptic number.

It is an amenable number.

13657801061 is a deficient number, since it is larger than the sum of its proper divisors (1).

13657801061 is an equidigital number, since it uses as much as digits as its factorization.

13657801061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 38.

The spelling of 13657801061 in words is "thirteen billion, six hundred fifty-seven million, eight hundred one thousand, sixty-one".