47731089155 has 4 divisors (see below), whose sum is σ = 57277306992. Its totient is φ = 38184871320.

The previous prime is 47731089127. The next prime is 47731089157. The reversal of 47731089155 is 55198013774.

It is a happy number.

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

It is not a de Polignac number, because 47731089155 - 2¹⁶ = 47731023619 is a prime.

It is a super-2 number, since 2×47731089155² (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 (47731089157) 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, 4773108911 + ... + 4773108920.

It is an arithmetic number, because the mean of its divisors is an integer number (14319326748).

Almost surely, 2^47731089155 is an apocalyptic number.

47731089155 is a deficient number, since it is larger than the sum of its proper divisors (9546217837).

47731089155 is an equidigital number, since it uses as much as digits as its factorization.

47731089155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9546217836.

The product of its (nonzero) digits is 1058400, while the sum is 50.

The spelling of 47731089155 in words is "forty-seven billion, seven hundred thirty-one million, eighty-nine thousand, one hundred fifty-five".