47649285457 has 2 divisors, whose sum is σ = 47649285458. Its totient is φ = 47649285456.

The previous prime is 47649285419. The next prime is 47649285473. The reversal of 47649285457 is 75458294674.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45706591681 + 1942693776 = 213791^2 + 44076^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47649285457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47649285395 and 47649285404.

It is not a weakly prime, because it can be changed into another prime (47649285407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23824642728 + 23824642729.

It is an arithmetic number, because the mean of its divisors is an integer number (23824642729).

Almost surely, 2^47649285457 is an apocalyptic number.

It is an amenable number.

47649285457 is a deficient number, since it is larger than the sum of its proper divisors (1).

47649285457 is an equidigital number, since it uses as much as digits as its factorization.

47649285457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67737600, while the sum is 61.

The spelling of 47649285457 in words is "forty-seven billion, six hundred forty-nine million, two hundred eighty-five thousand, four hundred fifty-seven".