255121033140 has 72 divisors (see below), whose sum is σ = 775614254688. Its totient is φ = 67878682560.

The previous prime is 255121033127. The next prime is 255121033171. The reversal of 255121033140 is 41330121552.

255121033140 is a `hidden beast` number, since 2 + 5 + 512 + 1 + 0 + 3 + 3 + 140 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1519966 + ... + 1679445.

It is an arithmetic number, because the mean of its divisors is an integer number (10772420204).

Almost surely, 2^255121033140 is an apocalyptic number.

255121033140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255121033140 is an abundant number, since it is smaller than the sum of its proper divisors (520493221548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255121033140 is a wasteful number, since it uses less digits than its factorization.

255121033140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199869 (or 3199864 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 255121033140 its reverse (41330121552), we get a palindrome (296451154692).

The spelling of 255121033140 in words is "two hundred fifty-five billion, one hundred twenty-one million, thirty-three thousand, one hundred forty".