49609681647 has 8 divisors (see below), whose sum is σ = 66147271344. Its totient is φ = 33072606528.

The previous prime is 49609681607. The next prime is 49609681651. The reversal of 49609681647 is 74618690694.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49609681647 - 2⁷ = 49609681519 is a prime.

It is a super-2 number, since 2×49609681647² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49609681607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309253 + ... + 441425.

It is an arithmetic number, because the mean of its divisors is an integer number (8268408918).

Almost surely, 2^49609681647 is an apocalyptic number.

49609681647 is a deficient number, since it is larger than the sum of its proper divisors (16537589697).

49609681647 is a wasteful number, since it uses less digits than its factorization.

49609681647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257289.

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 49609681647 in words is "forty-nine billion, six hundred nine million, six hundred eighty-one thousand, six hundred forty-seven".