253778274247 has 8 divisors (see below), whose sum is σ = 254017733472. Its totient is φ = 253538928000.

The previous prime is 253778274229. The next prime is 253778274251. The reversal of 253778274247 is 742472877352.

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 253778274247 - 2¹¹ = 253778272199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253778274191 and 253778274200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253778274847) 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, 4856523 + ... + 4908499.

It is an arithmetic number, because the mean of its divisors is an integer number (31752216684).

Almost surely, 2^253778274247 is an apocalyptic number.

253778274247 is a deficient number, since it is larger than the sum of its proper divisors (239459225).

253778274247 is a wasteful number, since it uses less digits than its factorization.

253778274247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56489.

The product of its digits is 36879360, while the sum is 58.

The spelling of 253778274247 in words is "two hundred fifty-three billion, seven hundred seventy-eight million, two hundred seventy-four thousand, two hundred forty-seven".