255640075734 has 32 divisors (see below), whose sum is σ = 514788293376. Its totient is φ = 84628936800.

The previous prime is 255640075699. The next prime is 255640075753. The reversal of 255640075734 is 437570046552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4061169 + ... + 4123635.

It is an arithmetic number, because the mean of its divisors is an integer number (16087134168).

Almost surely, 2^255640075734 is an apocalyptic number.

255640075734 is an abundant number, since it is smaller than the sum of its proper divisors (259148217642).

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

255640075734 is a wasteful number, since it uses less digits than its factorization.

255640075734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67140.

The product of its (nonzero) digits is 3528000, while the sum is 48.

The spelling of 255640075734 in words is "two hundred fifty-five billion, six hundred forty million, seventy-five thousand, seven hundred thirty-four".