49939836922657 has 4 divisors (see below), whose sum is σ = 54479822097456. Its totient is φ = 45399851747860.

The previous prime is 49939836922649. The next prime is 49939836922681. The reversal of 49939836922657 is 75622963893994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49939836922657 - 2³ = 49939836922649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49939836922627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2269992587383 + ... + 2269992587404.

It is an arithmetic number, because the mean of its divisors is an integer number (13619955524364).

Almost surely, 2^{49939836922657} is an apocalyptic number.

It is an amenable number.

49939836922657 is a deficient number, since it is larger than the sum of its proper divisors (4539985174799).

49939836922657 is a wasteful number, since it uses less digits than its factorization.

49939836922657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4539985174798.

The product of its digits is 9523422720, while the sum is 82.

The spelling of 49939836922657 in words is "forty-nine trillion, nine hundred thirty-nine billion, eight hundred thirty-six million, nine hundred twenty-two thousand, six hundred fifty-seven".