1248315979878 has 48 divisors (see below), whose sum is σ = 2950709473296. Its totient is φ = 378259053120.

The previous prime is 1248315979811. The next prime is 1248315979879. The reversal of 1248315979878 is 8789795138421.

1248315979878 is a `hidden beast` number, since 1 + 2 + 483 + 1 + 5 + 9 + 79 + 8 + 78 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248315979879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4212100 + ... + 4498712.

It is an arithmetic number, because the mean of its divisors is an integer number (61473114027).

Almost surely, 2^{1248315979878} is an apocalyptic number.

1248315979878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1248315979878 is an abundant number, since it is smaller than the sum of its proper divisors (1702393493418).

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

1248315979878 is a wasteful number, since it uses less digits than its factorization.

1248315979878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308629 (or 308626 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 72.

The spelling of 1248315979878 in words is "one trillion, two hundred forty-eight billion, three hundred fifteen million, nine hundred seventy-nine thousand, eight hundred seventy-eight".