49394677661 has 8 divisors (see below), whose sum is σ = 56519825664. Its totient is φ = 42286721040.

The previous prime is 49394677649. The next prime is 49394677667. The reversal of 49394677661 is 16677649394.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49394677661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 49394677594 and 49394677603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49394677667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4291685 + ... + 4303178.

It is an arithmetic number, because the mean of its divisors is an integer number (7064978208).

Almost surely, 2^49394677661 is an apocalyptic number.

It is an amenable number.

49394677661 is a deficient number, since it is larger than the sum of its proper divisors (7125148003).

49394677661 is an equidigital number, since it uses as much as digits as its factorization.

49394677661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8595691.

The product of its digits is 41150592, while the sum is 62.

The spelling of 49394677661 in words is "forty-nine billion, three hundred ninety-four million, six hundred seventy-seven thousand, six hundred sixty-one".