254436993666 has 16 divisors (see below), whose sum is σ = 565415541600. Its totient is φ = 84812331204.

The previous prime is 254436993649. The next prime is 254436993683. The reversal of 254436993666 is 666399634452.

It is an interprime number because it is at equal distance from previous prime (254436993649) and next prime (254436993683).

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

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, 2355898036 + ... + 2355898143.

It is an arithmetic number, because the mean of its divisors is an integer number (35338471350).

Almost surely, 2^254436993666 is an apocalyptic number.

254436993666 is an abundant number, since it is smaller than the sum of its proper divisors (310978547934).

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

254436993666 is a wasteful number, since it uses less digits than its factorization.

254436993666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711796190 (or 4711796184 counting only the distinct ones).

The product of its digits is 151165440, while the sum is 63.

The spelling of 254436993666 in words is "two hundred fifty-four billion, four hundred thirty-six million, nine hundred ninety-three thousand, six hundred sixty-six".