1005777802556 has 24 divisors (see below), whose sum is σ = 1808801300544. Its totient is φ = 489055806720.

The previous prime is 1005777802537. The next prime is 1005777802577. The reversal of 1005777802556 is 6552087775001.

1005777802556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1005777802556² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1005777802498 and 1005777802507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9745460 + ... + 9848123.

It is an arithmetic number, because the mean of its divisors is an integer number (75366720856).

Almost surely, 2^{1005777802556} is an apocalyptic number.

It is an amenable number.

1005777802556 is a deficient number, since it is larger than the sum of its proper divisors (803023497988).

1005777802556 is a wasteful number, since it uses less digits than its factorization.

1005777802556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19593941 (or 19593939 counting only the distinct ones).

The product of its (nonzero) digits is 4116000, while the sum is 53.

The spelling of 1005777802556 in words is "one trillion, five billion, seven hundred seventy-seven million, eight hundred two thousand, five hundred fifty-six".