254666121993 has 12 divisors (see below), whose sum is σ = 367867504368. Its totient is φ = 169769827320.

The previous prime is 254666121967. The next prime is 254666122003. The reversal of 254666121993 is 399121666452.

It is not a de Polignac number, because 254666121993 - 2⁹ = 254666121481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (254666121923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 415803 + ... + 825968.

It is an arithmetic number, because the mean of its divisors is an integer number (30655625364).

Almost surely, 2^254666121993 is an apocalyptic number.

It is an amenable number.

254666121993 is a deficient number, since it is larger than the sum of its proper divisors (113201382375).

254666121993 is a wasteful number, since it uses less digits than its factorization.

254666121993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264564 (or 1264561 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The spelling of 254666121993 in words is "two hundred fifty-four billion, six hundred sixty-six million, one hundred twenty-one thousand, nine hundred ninety-three".