254640107479 has 8 divisors (see below), whose sum is σ = 261827465328. Its totient is φ = 247468812480.

The previous prime is 254640107471. The next prime is 254640107531. The reversal of 254640107479 is 974701046452.

It is a happy number.

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 254640107479 - 2³ = 254640107471 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 (254640107471) 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, 3983557 + ... + 4046974.

It is an arithmetic number, because the mean of its divisors is an integer number (32728433166).

Almost surely, 2^254640107479 is an apocalyptic number.

254640107479 is a deficient number, since it is larger than the sum of its proper divisors (7187357849).

254640107479 is an equidigital number, since it uses as much as digits as its factorization.

254640107479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8031425.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 254640107479 in words is "two hundred fifty-four billion, six hundred forty million, one hundred seven thousand, four hundred seventy-nine".