13875565400077 has 2 divisors, whose sum is σ = 13875565400078. Its totient is φ = 13875565400076.

The previous prime is 13875565400041. The next prime is 13875565400111. The reversal of 13875565400077 is 77000456557831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12287345419561 + 1588219980516 = 3505331^2 + 1260246^2 .

It is a cyclic number.

It is not a de Polignac number, because 13875565400077 - 2¹⁵ = 13875565367309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13875565399994 and 13875565400030.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13875565400017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6937782700038 + 6937782700039.

It is an arithmetic number, because the mean of its divisors is an integer number (6937782700039).

Almost surely, 2^{13875565400077} is an apocalyptic number.

It is an amenable number.

13875565400077 is a deficient number, since it is larger than the sum of its proper divisors (1).

13875565400077 is an equidigital number, since it uses as much as digits as its factorization.

13875565400077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696000, while the sum is 58.

The spelling of 13875565400077 in words is "thirteen trillion, eight hundred seventy-five billion, five hundred sixty-five million, four hundred thousand, seventy-seven".