254343277664 has 72 divisors (see below), whose sum is σ = 583394147280. Its totient is φ = 108835351296.

The previous prime is 254343277633. The next prime is 254343277711. The reversal of 254343277664 is 466772343452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 889142 + ... + 1139850.

It is an arithmetic number, because the mean of its divisors is an integer number (8102696490).

Almost surely, 2^254343277664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 254343277664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291697073640).

254343277664 is an abundant number, since it is smaller than the sum of its proper divisors (329050869616).

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

254343277664 is a wasteful number, since it uses less digits than its factorization.

254343277664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251380 (or 251365 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 53.

The spelling of 254343277664 in words is "two hundred fifty-four billion, three hundred forty-three million, two hundred seventy-seven thousand, six hundred sixty-four".