254070853781 has 4 divisors (see below), whose sum is σ = 267443004000. Its totient is φ = 240698703564.

The previous prime is 254070853769. The next prime is 254070853787. The reversal of 254070853781 is 187358070452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 254070853781 - 2⁶ = 254070853717 is a prime.

It is a super-2 number, since 2×254070853781² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254070853787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6686075081 + ... + 6686075118.

It is an arithmetic number, because the mean of its divisors is an integer number (66860751000).

Almost surely, 2^254070853781 is an apocalyptic number.

It is an amenable number.

254070853781 is a deficient number, since it is larger than the sum of its proper divisors (13372150219).

254070853781 is a wasteful number, since it uses less digits than its factorization.

254070853781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13372150218.

The product of its (nonzero) digits is 1881600, while the sum is 50.

The spelling of 254070853781 in words is "two hundred fifty-four billion, seventy million, eight hundred fifty-three thousand, seven hundred eighty-one".