49757749391265 has 16 divisors (see below), whose sum is σ = 79617487431168. Its totient is φ = 26535770206976.

The previous prime is 49757749391239. The next prime is 49757749391309. The reversal of 49757749391265 is 56219394775794.

It is a cyclic number.

It is not a de Polignac number, because 49757749391265 - 2¹⁴ = 49757749374881 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105765912 + ... + 106235321.

It is an arithmetic number, because the mean of its divisors is an integer number (4976092964448).

Almost surely, 2^{49757749391265} is an apocalyptic number.

It is an amenable number.

49757749391265 is a deficient number, since it is larger than the sum of its proper divisors (29859738039903).

49757749391265 is a wasteful number, since it uses less digits than its factorization.

49757749391265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212016888.

The product of its digits is 3600676800, while the sum is 78.

The spelling of 49757749391265 in words is "forty-nine trillion, seven hundred fifty-seven billion, seven hundred forty-nine million, three hundred ninety-one thousand, two hundred sixty-five".