49971315851 has 8 divisors (see below), whose sum is σ = 50996404800. Its totient is φ = 48956529600.

The previous prime is 49971315847. The next prime is 49971315857. The reversal of 49971315851 is 15851317994.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49971315851 - 2² = 49971315847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49971315793 and 49971315802.

It is not an unprimeable number, because it can be changed into a prime (49971315857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2565875 + ... + 2585276.

It is an arithmetic number, because the mean of its divisors is an integer number (6374550600).

Almost surely, 2^49971315851 is an apocalyptic number.

49971315851 is a deficient number, since it is larger than the sum of its proper divisors (1025088949).

49971315851 is a wasteful number, since it uses less digits than its factorization.

49971315851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5151349.

The product of its digits is 1360800, while the sum is 53.

The spelling of 49971315851 in words is "forty-nine billion, nine hundred seventy-one million, three hundred fifteen thousand, eight hundred fifty-one".