47105891623 has 12 divisors (see below), whose sum is σ = 54938672400. Its totient is φ = 40373033148.

The previous prime is 47105891557. The next prime is 47105891627. The reversal of 47105891623 is 32619850174.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a de Polignac number, because none of the positive numbers 2^k-47105891623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47105891627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4013758 + ... + 4025476.

It is an arithmetic number, because the mean of its divisors is an integer number (4578222700).

It is a 1-persistent number, because it is pandigital, but 2⋅47105891623 = 94211783246 is not.

Almost surely, 2^47105891623 is an apocalyptic number.

47105891623 is a deficient number, since it is larger than the sum of its proper divisors (7832780777).

47105891623 is an frugal number, since it uses more digits than its factorization.

47105891623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23459 (or 11726 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 47105891623 in words is "forty-seven billion, one hundred five million, eight hundred ninety-one thousand, six hundred twenty-three".