253280077561 has 8 divisors (see below), whose sum is σ = 289886762304. Its totient is φ = 216779346960.

The previous prime is 253280077489. The next prime is 253280077597. The reversal of 253280077561 is 165770082352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253280077561 - 2⁷ = 253280077433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253280077361) 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 7 ways as a sum of consecutive naturals, for example, 26483410 + ... + 26492971.

It is an arithmetic number, because the mean of its divisors is an integer number (36235845288).

Almost surely, 2^253280077561 is an apocalyptic number.

It is an amenable number.

253280077561 is a deficient number, since it is larger than the sum of its proper divisors (36606684743).

253280077561 is an equidigital number, since it uses as much as digits as its factorization.

253280077561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52977071.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 253280077561 in words is "two hundred fifty-three billion, two hundred eighty million, seventy-seven thousand, five hundred sixty-one".