48781363721 has 4 divisors (see below), whose sum is σ = 48790044672. Its totient is φ = 48772682772.

The previous prime is 48781363663. The next prime is 48781363727. The reversal of 48781363721 is 12736318784.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 48781363721 - 2³⁴ = 31601494537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 48781363721.

It is not an unprimeable number, because it can be changed into a prime (48781363727) 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, 4332041 + ... + 4343286.

It is an arithmetic number, because the mean of its divisors is an integer number (12197511168).

Almost surely, 2^48781363721 is an apocalyptic number.

It is an amenable number.

48781363721 is a deficient number, since it is larger than the sum of its proper divisors (8680951).

48781363721 is an equidigital number, since it uses as much as digits as its factorization.

48781363721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8680950.

The product of its digits is 1354752, while the sum is 50.

The spelling of 48781363721 in words is "forty-eight billion, seven hundred eighty-one million, three hundred sixty-three thousand, seven hundred twenty-one".