249404358553139 has 2 divisors, whose sum is σ = 249404358553140. Its totient is φ = 249404358553138.

The previous prime is 249404358553127. The next prime is 249404358553177. The reversal of 249404358553139 is 931355853404942.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249404358553139 is a prime.

It is not a weakly prime, because it can be changed into another prime (249404358553639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124702179276569 + 124702179276570.

It is an arithmetic number, because the mean of its divisors is an integer number (124702179276570).

Almost surely, 2^{249404358553139} is an apocalyptic number.

249404358553139 is a deficient number, since it is larger than the sum of its proper divisors (1).

249404358553139 is an equidigital number, since it uses as much as digits as its factorization.

249404358553139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936000, while the sum is 65.

The spelling of 249404358553139 in words is "two hundred forty-nine trillion, four hundred four billion, three hundred fifty-eight million, five hundred fifty-three thousand, one hundred thirty-nine".