48591781247 has 4 divisors (see below), whose sum is σ = 49257422160. Its totient is φ = 47926140336.

The previous prime is 48591781237. The next prime is 48591781253. The reversal of 48591781247 is 74218719584.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48591781247 is a prime.

It is a super-2 number, since 2×48591781247² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 48591781192 and 48591781201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48591781237) 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, 332820347 + ... + 332820492.

It is an arithmetic number, because the mean of its divisors is an integer number (12314355540).

Almost surely, 2^48591781247 is an apocalyptic number.

48591781247 is a deficient number, since it is larger than the sum of its proper divisors (665640913).

48591781247 is an equidigital number, since it uses as much as digits as its factorization.

48591781247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665640912.

The product of its digits is 4515840, while the sum is 56.

The spelling of 48591781247 in words is "forty-eight billion, five hundred ninety-one million, seven hundred eighty-one thousand, two hundred forty-seven".