254078999971 has 2 divisors, whose sum is σ = 254078999972. Its totient is φ = 254078999970.

The previous prime is 254078999953. The next prime is 254079000013. The reversal of 254078999971 is 179999870452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 254078999971 - 2³¹ = 251931516323 is a prime.

It is a super-2 number, since 2×254078999971² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 254078999971.

It is not a weakly prime, because it can be changed into another prime (254075999971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127039499985 + 127039499986.

It is an arithmetic number, because the mean of its divisors is an integer number (127039499986).

Almost surely, 2^254078999971 is an apocalyptic number.

254078999971 is a deficient number, since it is larger than the sum of its proper divisors (1).

254078999971 is an equidigital number, since it uses as much as digits as its factorization.

254078999971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102876480, while the sum is 70.

The spelling of 254078999971 in words is "two hundred fifty-four billion, seventy-eight million, nine hundred ninety-nine thousand, nine hundred seventy-one".