51448603378 has 32 divisors (see below), whose sum is σ = 84018425904. Its totient is φ = 23529388032.

The previous prime is 51448603307. The next prime is 51448603391. The reversal of 51448603378 is 87330684415.

It can be written as a sum of positive squares in 8 ways, for example, as 45316617129 + 6131986249 = 212877^2 + 78307^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1079950 + ... + 1126582.

Almost surely, 2^51448603378 is an apocalyptic number.

51448603378 is a deficient number, since it is larger than the sum of its proper divisors (32569822526).

51448603378 is a wasteful number, since it uses less digits than its factorization.

51448603378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47566.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 51448603378 in words is "fifty-one billion, four hundred forty-eight million, six hundred three thousand, three hundred seventy-eight".