51638069482 has 4 divisors (see below), whose sum is σ = 77457104226. Its totient is φ = 25819034740.

The previous prime is 51638069467. The next prime is 51638069501. The reversal of 51638069482 is 28496083615.

51638069482 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 43422641161 + 8215428321 = 208381^2 + 90639^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12909517369 + ... + 12909517372.

Almost surely, 2^51638069482 is an apocalyptic number.

51638069482 is a deficient number, since it is larger than the sum of its proper divisors (25819034744).

51638069482 is a wasteful number, since it uses less digits than its factorization.

51638069482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25819034743.

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 51638069482 in words is "fifty-one billion, six hundred thirty-eight million, sixty-nine thousand, four hundred eighty-two".