51949464547 has 2 divisors, whose sum is σ = 51949464548. Its totient is φ = 51949464546.

The previous prime is 51949464527. The next prime is 51949464559. The reversal of 51949464547 is 74546494915.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51949464547 - 2³⁵ = 17589726179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51949464491 and 51949464500.

It is not a weakly prime, because it can be changed into another prime (51949464527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25974732273 + 25974732274.

It is an arithmetic number, because the mean of its divisors is an integer number (25974732274).

Almost surely, 2^51949464547 is an apocalyptic number.

51949464547 is a deficient number, since it is larger than the sum of its proper divisors (1).

51949464547 is an equidigital number, since it uses as much as digits as its factorization.

51949464547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21772800, while the sum is 58.

The spelling of 51949464547 in words is "fifty-one billion, nine hundred forty-nine million, four hundred sixty-four thousand, five hundred forty-seven".