248779680047 has 4 divisors (see below), whose sum is σ = 248783107560. Its totient is φ = 248776252536.

The previous prime is 248779680043. The next prime is 248779680089. The reversal of 248779680047 is 740086977842.

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 248779680047 - 2² = 248779680043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248779680041) 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, 1602473 + ... + 1750850.

It is an arithmetic number, because the mean of its divisors is an integer number (62195776890).

Almost surely, 2^248779680047 is an apocalyptic number.

248779680047 is a deficient number, since it is larger than the sum of its proper divisors (3427513).

248779680047 is an equidigital number, since it uses as much as digits as its factorization.

248779680047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3427512.

The product of its (nonzero) digits is 37933056, while the sum is 62.

The spelling of 248779680047 in words is "two hundred forty-eight billion, seven hundred seventy-nine million, six hundred eighty thousand, forty-seven".