1247073534378 has 48 divisors (see below), whose sum is σ = 3088364959680. Its totient is φ = 356263645248.

The previous prime is 1247073534353. The next prime is 1247073534389. The reversal of 1247073534378 is 8734353707421.

1247073534378 is a `hidden beast` number, since 1 + 2 + 4 + 7 + 0 + 73 + 534 + 37 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 455301 + ... + 1643607.

It is an arithmetic number, because the mean of its divisors is an integer number (64340936660).

Almost surely, 2^{1247073534378} is an apocalyptic number.

1247073534378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1247073534378 is an abundant number, since it is smaller than the sum of its proper divisors (1841291425302).

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

1247073534378 is a wasteful number, since it uses less digits than its factorization.

1247073534378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196651 (or 1196648 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 54.

The spelling of 1247073534378 in words is "one trillion, two hundred forty-seven billion, seventy-three million, five hundred thirty-four thousand, three hundred seventy-eight".