254240165663 has 16 divisors (see below), whose sum is σ = 280138921632. Its totient is φ = 228828832000.

The previous prime is 254240165657. The next prime is 254240165687. The reversal of 254240165663 is 366561042452.

It is a happy number.

It is not a de Polignac number, because 254240165663 - 2⁸ = 254240165407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254240162663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11322095 + ... + 11344527.

It is an arithmetic number, because the mean of its divisors is an integer number (17508682602).

Almost surely, 2^254240165663 is an apocalyptic number.

254240165663 is a deficient number, since it is larger than the sum of its proper divisors (25898755969).

254240165663 is an frugal number, since it uses more digits than its factorization.

254240165663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22747 (or 22545 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 254240165663 in words is "two hundred fifty-four billion, two hundred forty million, one hundred sixty-five thousand, six hundred sixty-three".