249477489511 has 2 divisors, whose sum is σ = 249477489512. Its totient is φ = 249477489510.

The previous prime is 249477489493. The next prime is 249477489559. The reversal of 249477489511 is 115984774942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249477489511 - 2⁹ = 249477488999 is a prime.

It is a super-2 number, since 2×249477489511² (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 249477489511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249477489011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124738744755 + 124738744756.

It is an arithmetic number, because the mean of its divisors is an integer number (124738744756).

Almost surely, 2^249477489511 is an apocalyptic number.

249477489511 is a deficient number, since it is larger than the sum of its proper divisors (1).

249477489511 is an equidigital number, since it uses as much as digits as its factorization.

249477489511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20321280, while the sum is 61.

The spelling of 249477489511 in words is "two hundred forty-nine billion, four hundred seventy-seven million, four hundred eighty-nine thousand, five hundred eleven".