51140072642 has 8 divisors (see below), whose sum is σ = 76712760336. Its totient is φ = 25569152532.

The previous prime is 51140072629. The next prime is 51140072663. The reversal of 51140072642 is 24627004115.

51140072642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 51140072599 and 51140072608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367028 + ... + 486815.

It is an arithmetic number, because the mean of its divisors is an integer number (9589095042).

Almost surely, 2^51140072642 is an apocalyptic number.

51140072642 is a deficient number, since it is larger than the sum of its proper divisors (25572687694).

51140072642 is a wasteful number, since it uses less digits than its factorization.

51140072642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883792.

The product of its (nonzero) digits is 13440, while the sum is 32.

Adding to 51140072642 its reverse (24627004115), we get a palindrome (75767076757).

The spelling of 51140072642 in words is "fifty-one billion, one hundred forty million, seventy-two thousand, six hundred forty-two".