49619668668 has 24 divisors (see below), whose sum is σ = 116903299968. Its totient is φ = 16379307696.

The previous prime is 49619668667. The next prime is 49619668691. The reversal of 49619668668 is 86686691694.

It is a happy number.

It is a super-2 number, since 2×49619668668² (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 (49619668667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20071446 + ... + 20073917.

It is an arithmetic number, because the mean of its divisors is an integer number (4870970832).

Almost surely, 2^49619668668 is an apocalyptic number.

It is an amenable number.

49619668668 is an abundant number, since it is smaller than the sum of its proper divisors (67283631300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49619668668 is a wasteful number, since it uses less digits than its factorization.

49619668668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40145473 (or 40145471 counting only the distinct ones).

The product of its digits is 161243136, while the sum is 69.

The spelling of 49619668668 in words is "forty-nine billion, six hundred nineteen million, six hundred sixty-eight thousand, six hundred sixty-eight".