49038987017691 has 24 divisors (see below), whose sum is σ = 80135538834624. Its totient is φ = 29720598190920.

The previous prime is 49038987017569. The next prime is 49038987017707. The reversal of 49038987017691 is 19671078983094.

49038987017691 is a `hidden beast` number, since 4 + 9 + 0 + 389 + 8 + 70 + 176 + 9 + 1 = 666.

It is not a de Polignac number, because 49038987017691 - 2⁹ = 49038987017179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49038987017191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9173021461 + ... + 9173026806.

It is an arithmetic number, because the mean of its divisors is an integer number (3338980784776).

Almost surely, 2^{49038987017691} is an apocalyptic number.

49038987017691 is a deficient number, since it is larger than the sum of its proper divisors (31096551816933).

49038987017691 is a wasteful number, since it uses less digits than its factorization.

49038987017691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18346048293 (or 18346048281 counting only the distinct ones).

The product of its (nonzero) digits is 164602368, while the sum is 72.

The spelling of 49038987017691 in words is "forty-nine trillion, thirty-eight billion, nine hundred eighty-seven million, seventeen thousand, six hundred ninety-one".