249011288138 has 32 divisors (see below), whose sum is σ = 394834176000. Its totient is φ = 117627269760.

The previous prime is 249011288137. The next prime is 249011288171. The reversal of 249011288138 is 831882110942.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 249011288092 and 249011288101.

It is not an unprimeable number, because it can be changed into a prime (249011288131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150308 + ... + 721536.

It is an arithmetic number, because the mean of its divisors is an integer number (12338568000).

Almost surely, 2^249011288138 is an apocalyptic number.

249011288138 is a deficient number, since it is larger than the sum of its proper divisors (145822887862).

249011288138 is a wasteful number, since it uses less digits than its factorization.

249011288138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571430.

The product of its (nonzero) digits is 221184, while the sum is 47.

The spelling of 249011288138 in words is "two hundred forty-nine billion, eleven million, two hundred eighty-eight thousand, one hundred thirty-eight".