254155534522561 has 16 divisors (see below), whose sum is σ = 295581286666240. Its totient is φ = 214017852905280.

The previous prime is 254155534522559. The next prime is 254155534522573. The reversal of 254155534522561 is 165225435551452.

It is a cyclic number.

It is not a de Polignac number, because 254155534522561 - 2¹ = 254155534522559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254155534522531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358640001 + ... + 359347966.

It is an arithmetic number, because the mean of its divisors is an integer number (18473830416640).

Almost surely, 2^{254155534522561} is an apocalyptic number.

It is an amenable number.

254155534522561 is a deficient number, since it is larger than the sum of its proper divisors (41425752143679).

254155534522561 is an equidigital number, since it uses as much as digits as its factorization.

254155534522561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717988864.

The product of its digits is 36000000, while the sum is 55.

The spelling of 254155534522561 in words is "two hundred fifty-four trillion, one hundred fifty-five billion, five hundred thirty-four million, five hundred twenty-two thousand, five hundred sixty-one".