51438554348 has 12 divisors (see below), whose sum is σ = 90514805472. Its totient is φ = 25577181360.

The previous prime is 51438554341. The next prime is 51438554381. The reversal of 51438554348 is 84345583415.

It is a junction number, because it is equal to n+sod(n) for n = 51438554296 and 51438554305.

It is not an unprimeable number, because it can be changed into a prime (51438554341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35523140 + ... + 35524587.

It is an arithmetic number, because the mean of its divisors is an integer number (7542900456).

Almost surely, 2^51438554348 is an apocalyptic number.

It is an amenable number.

51438554348 is a deficient number, since it is larger than the sum of its proper divisors (39076251124).

51438554348 is a wasteful number, since it uses less digits than its factorization.

51438554348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71047912 (or 71047910 counting only the distinct ones).

The product of its digits is 4608000, while the sum is 50.

The spelling of 51438554348 in words is "fifty-one billion, four hundred thirty-eight million, five hundred fifty-four thousand, three hundred forty-eight".