13861173541 has 2 divisors, whose sum is σ = 13861173542. Its totient is φ = 13861173540.

The previous prime is 13861173527. The next prime is 13861173559. The reversal of 13861173541 is 14537116831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13237422916 + 623750625 = 115054^2 + 24975^2 .

It is a cyclic number.

It is not a de Polignac number, because 13861173541 - 2⁵ = 13861173509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13861173494 and 13861173503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13861173511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6930586770 + 6930586771.

It is an arithmetic number, because the mean of its divisors is an integer number (6930586771).

Almost surely, 2^13861173541 is an apocalyptic number.

It is an amenable number.

13861173541 is a deficient number, since it is larger than the sum of its proper divisors (1).

13861173541 is an equidigital number, since it uses as much as digits as its factorization.

13861173541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The spelling of 13861173541 in words is "thirteen billion, eight hundred sixty-one million, one hundred seventy-three thousand, five hundred forty-one".