47538348931 has 4 divisors (see below), whose sum is σ = 47540328192. Its totient is φ = 47536369672.

The previous prime is 47538348929. The next prime is 47538348961. The reversal of 47538348931 is 13984383574.

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

It is a cyclic number.

It is not a de Polignac number, because 47538348931 - 2¹ = 47538348929 is a prime.

It is a super-2 number, since 2×47538348931² (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 (47538348961) 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, 953155 + ... + 1001788.

It is an arithmetic number, because the mean of its divisors is an integer number (11885082048).

Almost surely, 2^47538348931 is an apocalyptic number.

47538348931 is a deficient number, since it is larger than the sum of its proper divisors (1979261).

47538348931 is a wasteful number, since it uses less digits than its factorization.

47538348931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979260.

The product of its digits is 8709120, while the sum is 55.

The spelling of 47538348931 in words is "forty-seven billion, five hundred thirty-eight million, three hundred forty-eight thousand, nine hundred thirty-one".