49038987017665 has 4 divisors (see below), whose sum is σ = 58846784421204. Its totient is φ = 39231189614128.

The previous prime is 49038987017569. The next prime is 49038987017707. The reversal of 49038987017665 is 56671078983094.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37918156003984 + 11120831013681 = 6157772^2 + 3334791^2 .

It is a cyclic number.

It is not a de Polignac number, because 49038987017665 - 2³⁵ = 49004627279297 is a prime.

It is a super-2 number, since 2×49038987017665² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4903898701762 + ... + 4903898701771.

It is an arithmetic number, because the mean of its divisors is an integer number (14711696105301).

Almost surely, 2^{49038987017665} is an apocalyptic number.

It is an amenable number.

49038987017665 is a deficient number, since it is larger than the sum of its proper divisors (9807797403539).

49038987017665 is an equidigital number, since it uses as much as digits as its factorization.

49038987017665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9807797403538.

The product of its (nonzero) digits is 548674560, while the sum is 73.

The spelling of 49038987017665 in words is "forty-nine trillion, thirty-eight billion, nine hundred eighty-seven million, seventeen thousand, six hundred sixty-five".