47450502491 has 4 divisors (see below), whose sum is σ = 54229145712. Its totient is φ = 40671859272.

The previous prime is 47450502487. The next prime is 47450502509. The reversal of 47450502491 is 19420505474.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19420505474 = 2 ⋅9710252737.

It is a cyclic number.

It is not a de Polignac number, because 47450502491 - 2² = 47450502487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47450502791) 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, 3389321600 + ... + 3389321613.

It is an arithmetic number, because the mean of its divisors is an integer number (13557286428).

Almost surely, 2^47450502491 is an apocalyptic number.

47450502491 is a deficient number, since it is larger than the sum of its proper divisors (6778643221).

47450502491 is an equidigital number, since it uses as much as digits as its factorization.

47450502491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6778643220.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 47450502491 in words is "forty-seven billion, four hundred fifty million, five hundred two thousand, four hundred ninety-one".