255553050243561 has 8 divisors (see below), whose sum is σ = 389414171799744. Its totient is φ = 146030314424880.

The previous prime is 255553050243551. The next prime is 255553050243583. The reversal of 255553050243561 is 165342050355552.

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

It is not a de Polignac number, because 255553050243561 - 2⁴³ = 246756957221353 is a prime.

It is a super-2 number, since 2×255553050243561² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255553050243521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6084596434350 + ... + 6084596434391.

It is an arithmetic number, because the mean of its divisors is an integer number (48676771474968).

Almost surely, 2^{255553050243561} is an apocalyptic number.

255553050243561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

255553050243561 is a deficient number, since it is larger than the sum of its proper divisors (133861121556183).

255553050243561 is a wasteful number, since it uses less digits than its factorization.

255553050243561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12169192868751.

The product of its (nonzero) digits is 13500000, while the sum is 51.

The spelling of 255553050243561 in words is "two hundred fifty-five trillion, five hundred fifty-three billion, fifty million, two hundred forty-three thousand, five hundred sixty-one".