49439997667951 has 8 divisors (see below), whose sum is σ = 53934673881600. Its totient is φ = 44945343282840.

The previous prime is 49439997667943. The next prime is 49439997668021. The reversal of 49439997667951 is 15976679993494.

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

It is not a de Polignac number, because 49439997667951 - 2³ = 49439997667943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49439997637951) 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, 527781 + ... + 9957838.

It is an arithmetic number, because the mean of its divisors is an integer number (6741834235200).

Almost surely, 2^{49439997667951} is an apocalyptic number.

49439997667951 is a deficient number, since it is larger than the sum of its proper divisors (4494676213649).

49439997667951 is a wasteful number, since it uses less digits than its factorization.

49439997667951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10914269.

The product of its digits is 24998984640, while the sum is 88.

The spelling of 49439997667951 in words is "forty-nine trillion, four hundred thirty-nine billion, nine hundred ninety-seven million, six hundred sixty-seven thousand, nine hundred fifty-one".