47729073777885 has 16 divisors (see below), whose sum is σ = 84851686716480. Its totient is φ = 25455506014800.

The previous prime is 47729073777883. The next prime is 47729073777919. The reversal of 47729073777885 is 58877737092774.

47729073777885 is a `hidden beast` number, since 477 + 2 + 9 + 0 + 7 + 3 + 77 + 78 + 8 + 5 = 666.

It is not a de Polignac number, because 47729073777885 - 2¹ = 47729073777883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47729073777883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176774347191 + ... + 176774347460.

It is an arithmetic number, because the mean of its divisors is an integer number (5303230419780).

Almost surely, 2^{47729073777885} is an apocalyptic number.

47729073777885 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47729073777885 is a deficient number, since it is larger than the sum of its proper divisors (37122612938595).

47729073777885 is a wasteful number, since it uses less digits than its factorization.

47729073777885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353548694665 (or 353548694659 counting only the distinct ones).

The product of its (nonzero) digits is 8131898880, while the sum is 81.

The spelling of 47729073777885 in words is "forty-seven trillion, seven hundred twenty-nine billion, seventy-three million, seven hundred seventy-seven thousand, eight hundred eighty-five".