27255331551 has 32 divisors (see below), whose sum is σ = 42994391040. Its totient is φ = 15026812416.

The previous prime is 27255331547. The next prime is 27255331553. The reversal of 27255331551 is 15513355272.

It is not a de Polignac number, because 27255331551 - 2² = 27255331547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27255331553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 890535 + ... + 920631.

It is an arithmetic number, because the mean of its divisors is an integer number (1343574720).

Almost surely, 2^27255331551 is an apocalyptic number.

27255331551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

27255331551 is a deficient number, since it is larger than the sum of its proper divisors (15739059489).

27255331551 is a wasteful number, since it uses less digits than its factorization.

27255331551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31623.

The product of its digits is 157500, while the sum is 39.

The spelling of 27255331551 in words is "twenty-seven billion, two hundred fifty-five million, three hundred thirty-one thousand, five hundred fifty-one".