247266257849 has 32 divisors (see below), whose sum is σ = 296191795200. Its totient is φ = 204212923200.

The previous prime is 247266257839. The next prime is 247266257939. The reversal of 247266257849 is 948752662742.

It is not a de Polignac number, because 247266257849 - 2²⁴ = 247249480633 is a prime.

It is a super-2 number, since 2×247266257849² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 247266257791 and 247266257800.

It is not an unprimeable number, because it can be changed into a prime (247266257839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173324 + ... + 724274.

It is an arithmetic number, because the mean of its divisors is an integer number (9255993600).

Almost surely, 2^247266257849 is an apocalyptic number.

It is an amenable number.

247266257849 is a deficient number, since it is larger than the sum of its proper divisors (48925537351).

247266257849 is a wasteful number, since it uses less digits than its factorization.

247266257849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551085.

The product of its digits is 81285120, while the sum is 62.

The spelling of 247266257849 in words is "two hundred forty-seven billion, two hundred sixty-six million, two hundred fifty-seven thousand, eight hundred forty-nine".