47445654491 has 2 divisors, whose sum is σ = 47445654492. Its totient is φ = 47445654490.

The previous prime is 47445654469. The next prime is 47445654511. The reversal of 47445654491 is 19445654474.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47445654491 - 2¹⁰ = 47445653467 is a prime.

It is a super-3 number, since 3×47445654491³ (a number of 33 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (47445654401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23722827245 + 23722827246.

It is an arithmetic number, because the mean of its divisors is an integer number (23722827246).

Almost surely, 2^47445654491 is an apocalyptic number.

47445654491 is a deficient number, since it is larger than the sum of its proper divisors (1).

47445654491 is an equidigital number, since it uses as much as digits as its factorization.

47445654491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9676800, while the sum is 53.

The spelling of 47445654491 in words is "forty-seven billion, four hundred forty-five million, six hundred fifty-four thousand, four hundred ninety-one".