249279148043 has 4 divisors (see below), whose sum is σ = 249331865640. Its totient is φ = 249226430448.

The previous prime is 249279147959. The next prime is 249279148073. The reversal of 249279148043 is 340841972942.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 249279148043 - 2²⁴ = 249262370827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249279148073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26351705 + ... + 26361162.

It is an arithmetic number, because the mean of its divisors is an integer number (62332966410).

Almost surely, 2^249279148043 is an apocalyptic number.

249279148043 is a deficient number, since it is larger than the sum of its proper divisors (52717597).

249279148043 is an equidigital number, since it uses as much as digits as its factorization.

249279148043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52717596.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 249279148043 in words is "two hundred forty-nine billion, two hundred seventy-nine million, one hundred forty-eight thousand, forty-three".