13530254477 has 2 divisors, whose sum is σ = 13530254478. Its totient is φ = 13530254476.

The previous prime is 13530254467. The next prime is 13530254489. The reversal of 13530254477 is 77445203531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12139412041 + 1390842436 = 110179^2 + 37294^2 .

It is an emirp because it is prime and its reverse (77445203531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13530254477 - 2¹⁶ = 13530188941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13530254467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765127238 + 6765127239.

It is an arithmetic number, because the mean of its divisors is an integer number (6765127239).

Almost surely, 2^13530254477 is an apocalyptic number.

It is an amenable number.

13530254477 is a deficient number, since it is larger than the sum of its proper divisors (1).

13530254477 is an equidigital number, since it uses as much as digits as its factorization.

13530254477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 41.

The spelling of 13530254477 in words is "thirteen billion, five hundred thirty million, two hundred fifty-four thousand, four hundred seventy-seven".