51530286378 has 16 divisors (see below), whose sum is σ = 103062937536. Its totient is φ = 17176368000.

The previous prime is 51530286347. The next prime is 51530286413. The reversal of 51530286378 is 87368203515.

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, 324378 + ... + 456378.

It is an arithmetic number, because the mean of its divisors is an integer number (6441433596).

Almost surely, 2^51530286378 is an apocalyptic number.

51530286378 is an abundant number, since it is smaller than the sum of its proper divisors (51532651158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51530286378 is a wasteful number, since it uses less digits than its factorization.

51530286378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197069.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 51530286378 in words is "fifty-one billion, five hundred thirty million, two hundred eighty-six thousand, three hundred seventy-eight".