1278583383780 has 96 divisors (see below), whose sum is σ = 4074834919680. Its totient is φ = 332639573760.

The previous prime is 1278583383733. The next prime is 1278583383841. The reversal of 1278583383780 is 873833858721.

1278583383780 is a `hidden beast` number, since 1 + 27 + 85 + 83 + 383 + 7 + 80 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28852824 + ... + 28897103.

It is an arithmetic number, because the mean of its divisors is an integer number (42446197080).

Almost surely, 2^{1278583383780} is an apocalyptic number.

1278583383780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1278583383780 is an abundant number, since it is smaller than the sum of its proper divisors (2796251535900).

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

1278583383780 is a wasteful number, since it uses less digits than its factorization.

1278583383780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57749986 (or 57749978 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 63.

The spelling of 1278583383780 in words is "one trillion, two hundred seventy-eight billion, five hundred eighty-three million, three hundred eighty-three thousand, seven hundred eighty".