6542405101 has 2 divisors, whose sum is σ = 6542405102. Its totient is φ = 6542405100.

The previous prime is 6542405099. The next prime is 6542405117. The reversal of 6542405101 is 1015042456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6497166025 + 45239076 = 80605^2 + 6726^2 .

It is a cyclic number.

It is not a de Polignac number, because 6542405101 - 2¹ = 6542405099 is a prime.

Together with 6542405099, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6542405101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6542405141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3271202550 + 3271202551.

It is an arithmetic number, because the mean of its divisors is an integer number (3271202551).

Almost surely, 2^6542405101 is an apocalyptic number.

It is an amenable number.

6542405101 is a deficient number, since it is larger than the sum of its proper divisors (1).

6542405101 is an equidigital number, since it uses as much as digits as its factorization.

6542405101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 6542405101 is about 80885.1352289158. The cubic root of 6542405101 is about 1870.3051825404.

Adding to 6542405101 its reverse (1015042456), we get a palindrome (7557447557).

The spelling of 6542405101 in words is "six billion, five hundred forty-two million, four hundred five thousand, one hundred one".