49429205857 has 16 divisors (see below), whose sum is σ = 51377179392. Its totient is φ = 47523888000.

The previous prime is 49429205849. The next prime is 49429205893. The reversal of 49429205857 is 75850292494.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 49429205857 - 2³ = 49429205849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49429205798 and 49429205807.

It is not an unprimeable number, because it can be changed into a prime (49429205257) 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 15 ways as a sum of consecutive naturals, for example, 832483 + ... + 889879.

It is an arithmetic number, because the mean of its divisors is an integer number (3211073712).

Almost surely, 2^49429205857 is an apocalyptic number.

49429205857 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

49429205857 is a deficient number, since it is larger than the sum of its proper divisors (1947973535).

49429205857 is a wasteful number, since it uses less digits than its factorization.

49429205857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57768.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 49429205857 in words is "forty-nine billion, four hundred twenty-nine million, two hundred five thousand, eight hundred fifty-seven".