249123407533 has 32 divisors (see below), whose sum is σ = 335759542272. Its totient is φ = 178508145600.

The previous prime is 249123407443. The next prime is 249123407549. The reversal of 249123407533 is 335704321942.

It is a cyclic number.

It is not a de Polignac number, because 249123407533 - 2²⁵ = 249089853101 is a prime.

It is a super-2 number, since 2×249123407533² (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 249123407533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249123407563) 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 in 31 ways as a sum of consecutive naturals, for example, 209883 + ... + 736408.

It is an arithmetic number, because the mean of its divisors is an integer number (10492485696).

Almost surely, 2^249123407533 is an apocalyptic number.

It is an amenable number.

249123407533 is a deficient number, since it is larger than the sum of its proper divisors (86636134739).

249123407533 is a wasteful number, since it uses less digits than its factorization.

249123407533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946585.

The product of its (nonzero) digits is 544320, while the sum is 43.

It can be divided in two parts, 249123 and 407533, that added together give a palindrome (656656).

The spelling of 249123407533 in words is "two hundred forty-nine billion, one hundred twenty-three million, four hundred seven thousand, five hundred thirty-three".