49903206558561 has 12 divisors (see below), whose sum is σ = 72118686504592. Its totient is φ = 33252061127256.

The previous prime is 49903206558533. The next prime is 49903206558593. The reversal of 49903206558561 is 16585560230994.

49903206558561 is a `hidden beast` number, since 4 + 9 + 9 + 0 + 3 + 2 + 0 + 65 + 5 + 8 + 561 = 666.

It is not a de Polignac number, because 49903206558561 - 2²⁷ = 49903072340833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49903206558061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1395251551 + ... + 1395287316.

Almost surely, 2^{49903206558561} is an apocalyptic number.

It is an amenable number.

49903206558561 is a deficient number, since it is larger than the sum of its proper divisors (22215479946031).

49903206558561 is a wasteful number, since it uses less digits than its factorization.

49903206558561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790540860 (or 2790540857 counting only the distinct ones).

The product of its (nonzero) digits is 69984000, while the sum is 63.

The spelling of 49903206558561 in words is "forty-nine trillion, nine hundred three billion, two hundred six million, five hundred fifty-eight thousand, five hundred sixty-one".