51512351506 has 16 divisors (see below), whose sum is σ = 96334787520. Its totient is φ = 20069747280.

The previous prime is 51512351459. The next prime is 51512351531. The reversal of 51512351506 is 60515321515.

51512351506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167247741 + ... + 167248048.

It is an arithmetic number, because the mean of its divisors is an integer number (6020924220).

Almost surely, 2^51512351506 is an apocalyptic number.

51512351506 is a deficient number, since it is larger than the sum of its proper divisors (44822436014).

51512351506 is a wasteful number, since it uses less digits than its factorization.

51512351506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334495809.

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 51512351506 in words is "fifty-one billion, five hundred twelve million, three hundred fifty-one thousand, five hundred six".