254157406687 has 2 divisors, whose sum is σ = 254157406688. Its totient is φ = 254157406686.

The previous prime is 254157406661. The next prime is 254157406733. The reversal of 254157406687 is 786604751452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 254157406687 - 2¹⁵ = 254157373919 is a prime.

It is a super-2 number, since 2×254157406687² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254157406387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127078703343 + 127078703344.

It is an arithmetic number, because the mean of its divisors is an integer number (127078703344).

Almost surely, 2^254157406687 is an apocalyptic number.

254157406687 is a deficient number, since it is larger than the sum of its proper divisors (1).

254157406687 is an equidigital number, since it uses as much as digits as its factorization.

254157406687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11289600, while the sum is 55.

The spelling of 254157406687 in words is "two hundred fifty-four billion, one hundred fifty-seven million, four hundred six thousand, six hundred eighty-seven".