1005552263644 has 6 divisors (see below), whose sum is σ = 1759716461384. Its totient is φ = 502776131820.

The previous prime is 1005552263629. The next prime is 1005552263663. The reversal of 1005552263644 is 4463622555001.

It is a super-2 number, since 2×1005552263644² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1005552263644.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125694032952 + ... + 125694032959.

Almost surely, 2^{1005552263644} is an apocalyptic number.

It is an amenable number.

1005552263644 is a deficient number, since it is larger than the sum of its proper divisors (754164197740).

1005552263644 is a wasteful number, since it uses less digits than its factorization.

1005552263644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251388065915 (or 251388065913 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 1005552263644 in words is "one trillion, five billion, five hundred fifty-two million, two hundred sixty-three thousand, six hundred forty-four".