47724905881 has 4 divisors (see below), whose sum is σ = 47733760692. Its totient is φ = 47716051072.

The previous prime is 47724905843. The next prime is 47724905897. The reversal of 47724905881 is 18850942774.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36421814025 + 11303091856 = 190845^2 + 106316^2 .

It is a cyclic number.

It is not a de Polignac number, because 47724905881 - 2⁹ = 47724905369 is a prime.

It is a super-2 number, since 2×47724905881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47724995881) 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, 4419316 + ... + 4430101.

It is an arithmetic number, because the mean of its divisors is an integer number (11933440173).

Almost surely, 2^47724905881 is an apocalyptic number.

It is an amenable number.

47724905881 is a deficient number, since it is larger than the sum of its proper divisors (8854811).

47724905881 is an equidigital number, since it uses as much as digits as its factorization.

47724905881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8854810.

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 47724905881 in words is "forty-seven billion, seven hundred twenty-four million, nine hundred five thousand, eight hundred eighty-one".