6540542153 has 2 divisors, whose sum is σ = 6540542154. Its totient is φ = 6540542152.

The previous prime is 6540542123. The next prime is 6540542189. The reversal of 6540542153 is 3512450456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5671294864 + 869247289 = 75308^2 + 29483^2 .

It is a cyclic number.

It is not a de Polignac number, because 6540542153 - 2⁶ = 6540542089 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6540542123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3270271076 + 3270271077.

It is an arithmetic number, because the mean of its divisors is an integer number (3270271077).

Almost surely, 2^6540542153 is an apocalyptic number.

It is an amenable number.

6540542153 is a deficient number, since it is larger than the sum of its proper divisors (1).

6540542153 is an equidigital number, since it uses as much as digits as its factorization.

6540542153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 6540542153 is about 80873.6183993272. The cubic root of 6540542153 is about 1870.1276427308.

The spelling of 6540542153 in words is "six billion, five hundred forty million, five hundred forty-two thousand, one hundred fifty-three".