1078661382556 has 6 divisors (see below), whose sum is σ = 1887657419480. Its totient is φ = 539330691276.

The previous prime is 1078661382553. The next prime is 1078661382559. The reversal of 1078661382556 is 6552831668701.

1078661382556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1078661382553) and next prime (1078661382559).

It is a self number, because there is not a number n which added to its sum of digits gives 1078661382556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078661382553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134832672816 + ... + 134832672823.

Almost surely, 2^{1078661382556} is an apocalyptic number.

It is an amenable number.

1078661382556 is a deficient number, since it is larger than the sum of its proper divisors (808996036924).

1078661382556 is a wasteful number, since it uses less digits than its factorization.

1078661382556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269665345643 (or 269665345641 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 58.

The spelling of 1078661382556 in words is "one trillion, seventy-eight billion, six hundred sixty-one million, three hundred eighty-two thousand, five hundred fifty-six".