49455370857 has 4 divisors (see below), whose sum is σ = 65940494480. Its totient is φ = 32970247236.

The previous prime is 49455370847. The next prime is 49455370859. The reversal of 49455370857 is 75807355494.

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 not a de Polignac number, because 49455370857 - 2¹⁸ = 49455108713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49455370797 and 49455370806.

It is not an unprimeable number, because it can be changed into a prime (49455370859) 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, 8242561807 + ... + 8242561812.

It is an arithmetic number, because the mean of its divisors is an integer number (16485123620).

Almost surely, 2^49455370857 is an apocalyptic number.

It is an amenable number.

49455370857 is a deficient number, since it is larger than the sum of its proper divisors (16485123623).

49455370857 is a wasteful number, since it uses less digits than its factorization.

49455370857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16485123622.

The product of its (nonzero) digits is 21168000, while the sum is 57.

The spelling of 49455370857 in words is "forty-nine billion, four hundred fifty-five million, three hundred seventy thousand, eight hundred fifty-seven".