49518205399 has 16 divisors (see below), whose sum is σ = 54365555104. Its totient is φ = 44823715200.

The previous prime is 49518205351. The next prime is 49518205409. The reversal of 49518205399 is 99350281594.

It is a cyclic number.

It is not a de Polignac number, because 49518205399 - 2²⁷ = 49383987671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49518202399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168157 + ... + 356809.

It is an arithmetic number, because the mean of its divisors is an integer number (3397847194).

Almost surely, 2^49518205399 is an apocalyptic number.

49518205399 is a deficient number, since it is larger than the sum of its proper divisors (4847349705).

49518205399 is a wasteful number, since it uses less digits than its factorization.

49518205399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189058.

The product of its (nonzero) digits is 3499200, while the sum is 55.

The spelling of 49518205399 in words is "forty-nine billion, five hundred eighteen million, two hundred five thousand, three hundred ninety-nine".