1005621316755 has 32 divisors (see below), whose sum is σ = 1755527102208. Its totient is φ = 487501526400.

The previous prime is 1005621316673. The next prime is 1005621316807. The reversal of 1005621316755 is 5576131265001.

1005621316755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1005621316755 - 2¹⁷ = 1005621185683 is a prime.

It is a super-2 number, since 2×1005621316755² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 669472 + ... + 1568258.

It is an arithmetic number, because the mean of its divisors is an integer number (54860221944).

Almost surely, 2^{1005621316755} is an apocalyptic number.

1005621316755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1005621316755 is a deficient number, since it is larger than the sum of its proper divisors (749905785453).

1005621316755 is a wasteful number, since it uses less digits than its factorization.

1005621316755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905587.

The product of its (nonzero) digits is 189000, while the sum is 42.

The spelling of 1005621316755 in words is "one trillion, five billion, six hundred twenty-one million, three hundred sixteen thousand, seven hundred fifty-five".