255634771392 has 672 divisors, whose sum is σ = 1020305954304. Its totient is φ = 61287321600.

The previous prime is 255634771373. The next prime is 255634771421. The reversal of 255634771392 is 293177436552.

255634771392 is a `hidden beast` number, since 2 + 5 + 563 + 4 + 7 + 71 + 3 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15559342 + ... + 15575762.

It is an arithmetic number, because the mean of its divisors is an integer number (1518312432).

Almost surely, 2^255634771392 is an apocalyptic number.

255634771392 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255634771392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (510152977152).

255634771392 is an abundant number, since it is smaller than the sum of its proper divisors (764671182912).

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

255634771392 is a wasteful number, since it uses less digits than its factorization.

255634771392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16479 (or 16457 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 54.

The spelling of 255634771392 in words is "two hundred fifty-five billion, six hundred thirty-four million, seven hundred seventy-one thousand, three hundred ninety-two".