49409572638 has 8 divisors (see below), whose sum is σ = 98819145288. Its totient is φ = 16469857544.

The previous prime is 49409572591. The next prime is 49409572651. The reversal of 49409572638 is 83627590494.

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

49409572638 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4117464381 + ... + 4117464392.

It is an arithmetic number, because the mean of its divisors is an integer number (12352393161).

Almost surely, 2^49409572638 is an apocalyptic number.

49409572638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

49409572638 is a wasteful number, since it uses less digits than its factorization.

49409572638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8234928778.

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 49409572638 in words is "forty-nine billion, four hundred nine million, five hundred seventy-two thousand, six hundred thirty-eight".