47114671781 has 4 divisors (see below), whose sum is σ = 47913225600. Its totient is φ = 46316117964.

The previous prime is 47114671771. The next prime is 47114671787. The reversal of 47114671781 is 18717641174.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18717641174 = 2 ⋅9358820587.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47114671781 is a prime.

It is a super-2 number, since 2×47114671781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47114671787) 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 3 ways as a sum of consecutive naturals, for example, 399276821 + ... + 399276938.

It is an arithmetic number, because the mean of its divisors is an integer number (11978306400).

Almost surely, 2^47114671781 is an apocalyptic number.

It is an amenable number.

47114671781 is a deficient number, since it is larger than the sum of its proper divisors (798553819).

47114671781 is an equidigital number, since it uses as much as digits as its factorization.

47114671781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798553818.

The product of its digits is 263424, while the sum is 47.

The spelling of 47114671781 in words is "forty-seven billion, one hundred fourteen million, six hundred seventy-one thousand, seven hundred eighty-one".