255738650464 has 48 divisors (see below), whose sum is σ = 549415270656. Its totient is φ = 116211318400.

The previous prime is 255738650443. The next prime is 255738650471. The reversal of 255738650464 is 464056837552.

It is a super-3 number, since 3×255738650464³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1138509 + ... + 1344499.

It is an arithmetic number, because the mean of its divisors is an integer number (11446151472).

Almost surely, 2^255738650464 is an apocalyptic number.

It is an amenable number.

255738650464 is an abundant number, since it is smaller than the sum of its proper divisors (293676620192).

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

255738650464 is a wasteful number, since it uses less digits than its factorization.

255738650464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209539 (or 209531 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 55.

The spelling of 255738650464 in words is "two hundred fifty-five billion, seven hundred thirty-eight million, six hundred fifty thousand, four hundred sixty-four".