49077981447 has 16 divisors (see below), whose sum is σ = 73315512192. Its totient is φ = 28940332320.

The previous prime is 49077981443. The next prime is 49077981457. The reversal of 49077981447 is 74418977094.

It is not a de Polignac number, because 49077981447 - 2² = 49077981443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49077981443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20096233 + ... + 20098674.

It is an arithmetic number, because the mean of its divisors is an integer number (4582219512).

Almost surely, 2^49077981447 is an apocalyptic number.

49077981447 is a deficient number, since it is larger than the sum of its proper divisors (24237530745).

49077981447 is a wasteful number, since it uses less digits than its factorization.

49077981447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40194958.

The product of its (nonzero) digits is 14224896, while the sum is 60.

The spelling of 49077981447 in words is "forty-nine billion, seventy-seven million, nine hundred eighty-one thousand, four hundred forty-seven".