51044819497 has 12 divisors (see below), whose sum is σ = 61970381440. Its totient is φ = 41179012416.

The previous prime is 51044819461. The next prime is 51044819503. The reversal of 51044819497 is 79491844015.

It is not a de Polignac number, because 51044819497 - 2¹⁵ = 51044786729 is a prime.

It is a super-2 number, since 2×51044819497² (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 (51044819407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12614097 + ... + 12618142.

Almost surely, 2^51044819497 is an apocalyptic number.

It is an amenable number.

51044819497 is a deficient number, since it is larger than the sum of its proper divisors (10925561943).

51044819497 is a wasteful number, since it uses less digits than its factorization.

51044819497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25232280 (or 25232263 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 51044819497 in words is "fifty-one billion, forty-four million, eight hundred nineteen thousand, four hundred ninety-seven".