254145617243 has 8 divisors (see below), whose sum is σ = 290471450880. Its totient is φ = 217824612840.

The previous prime is 254145617239. The next prime is 254145617249. The reversal of 254145617243 is 342716541452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 254145617243 - 2² = 254145617239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 254145617194 and 254145617203.

It is not an unprimeable number, because it can be changed into a prime (254145617249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1093823 + ... + 1305656.

It is an arithmetic number, because the mean of its divisors is an integer number (36308931360).

Almost surely, 2^254145617243 is an apocalyptic number.

254145617243 is a deficient number, since it is larger than the sum of its proper divisors (36325833637).

254145617243 is a wasteful number, since it uses less digits than its factorization.

254145617243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414617.

The product of its digits is 806400, while the sum is 44.

The spelling of 254145617243 in words is "two hundred fifty-four billion, one hundred forty-five million, six hundred seventeen thousand, two hundred forty-three".