249224503545 has 24 divisors (see below), whose sum is σ = 433234092096. Its totient is φ = 132536672928.

The previous prime is 249224503531. The next prime is 249224503601. The reversal of 249224503545 is 545305422942.

249224503545 is a `hidden beast` number, since 2 + 4 + 92 + 2 + 4 + 503 + 54 + 5 = 666.

It is not a de Polignac number, because 249224503545 - 2⁶ = 249224503481 is a prime.

It is a super-2 number, since 2×249224503545² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 249224503545.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 7964677 + ... + 7995906.

It is an arithmetic number, because the mean of its divisors is an integer number (18051420504).

Almost surely, 2^249224503545 is an apocalyptic number.

It is an amenable number.

249224503545 is a deficient number, since it is larger than the sum of its proper divisors (184009588551).

249224503545 is a wasteful number, since it uses less digits than its factorization.

249224503545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15960941 (or 15960938 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 249224503545 in words is "two hundred forty-nine billion, two hundred twenty-four million, five hundred three thousand, five hundred forty-five".