255791947500 has 90 divisors (see below), whose sum is σ = 807972937772. Its totient is φ = 68211180000.

The previous prime is 255791947469. The next prime is 255791947511. The reversal of 255791947500 is 5749197552.

It is a happy number.

255791947500 is a `hidden beast` number, since 2 + 5 + 5 + 7 + 91 + 9 + 47 + 500 = 666.

It is a tau number, because it is divible by the number of its divisors (90).

It is a super-3 number, since 3×255791947500³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

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 29 ways as a sum of consecutive naturals, for example, 5661766 + ... + 5706765.

Almost surely, 2^255791947500 is an apocalyptic number.

255791947500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255791947500 is an abundant number, since it is smaller than the sum of its proper divisors (552180990272).

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

255791947500 is a wasteful number, since it uses less digits than its factorization.

255791947500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11368561 (or 11368541 counting only the distinct ones).

The product of its (nonzero) digits is 3969000, while the sum is 54.

The spelling of 255791947500 in words is "two hundred fifty-five billion, seven hundred ninety-one million, nine hundred forty-seven thousand, five hundred".