49609681648 has 20 divisors (see below), whose sum is σ = 96123960520. Its totient is φ = 24803498304.

The previous prime is 49609681607. The next prime is 49609681651. The reversal of 49609681648 is 84618690694.

It is a super-2 number, since 2×49609681648² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264886 + ... + 411562.

It is an arithmetic number, because the mean of its divisors is an integer number (4806198026).

Almost surely, 2^49609681648 is an apocalyptic number.

It is an amenable number.

49609681648 is a deficient number, since it is larger than the sum of its proper divisors (46514278872).

49609681648 is a wasteful number, since it uses less digits than its factorization.

49609681648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167824 (or 167818 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 61.

The spelling of 49609681648 in words is "forty-nine billion, six hundred nine million, six hundred eighty-one thousand, six hundred forty-eight".