1078131057556 has 72 divisors (see below), whose sum is σ = 2343452126400. Its totient is φ = 431688394368.

The previous prime is 1078131057529. The next prime is 1078131057571. The reversal of 1078131057556 is 6557501318701.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

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, 2587081 + ... + 2974768.

It is an arithmetic number, because the mean of its divisors is an integer number (32547946200).

Almost surely, 2^{1078131057556} is an apocalyptic number.

It is an amenable number.

1078131057556 is an abundant number, since it is smaller than the sum of its proper divisors (1265321068844).

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

1078131057556 is a wasteful number, since it uses less digits than its factorization.

1078131057556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561933 (or 5561924 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 49.

The spelling of 1078131057556 in words is "one trillion, seventy-eight billion, one hundred thirty-one million, fifty-seven thousand, five hundred fifty-six".