49550561391 has 8 divisors (see below), whose sum is σ = 67603866880. Its totient is φ = 32265481752.

The previous prime is 49550561381. The next prime is 49550561399. The reversal of 49550561391 is 19316505594.

49550561391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 49550561391 - 2¹⁵ = 49550528623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49550561391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49550561399) 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, 192056311 + ... + 192056568.

It is an arithmetic number, because the mean of its divisors is an integer number (8450483360).

Almost surely, 2^49550561391 is an apocalyptic number.

49550561391 is a deficient number, since it is larger than the sum of its proper divisors (18053305489).

49550561391 is a wasteful number, since it uses less digits than its factorization.

49550561391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384112925.

The product of its (nonzero) digits is 729000, while the sum is 48.

The spelling of 49550561391 in words is "forty-nine billion, five hundred fifty million, five hundred sixty-one thousand, three hundred ninety-one".