49646430721 has 4 divisors (see below), whose sum is σ = 49647463600. Its totient is φ = 49645397844.

The previous prime is 49646430707. The next prime is 49646430727. The reversal of 49646430721 is 12703464694.

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 49646430721 - 2⁵ = 49646430689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49646430727) 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, 440631 + ... + 541708.

It is an arithmetic number, because the mean of its divisors is an integer number (12411865900).

Almost surely, 2^49646430721 is an apocalyptic number.

It is an amenable number.

49646430721 is a deficient number, since it is larger than the sum of its proper divisors (1032879).

49646430721 is an equidigital number, since it uses as much as digits as its factorization.

49646430721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032878.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 49646430721 in words is "forty-nine billion, six hundred forty-six million, four hundred thirty thousand, seven hundred twenty-one".