1016565001551 has 16 divisors (see below), whose sum is σ = 1642933336320. Its totient is φ = 616100000760.

The previous prime is 1016565001519. The next prime is 1016565001553. The reversal of 1016565001551 is 1551005656101.

It is a happy number.

1016565001551 is a `hidden beast` number, since 1 + 0 + 1 + 6 + 56 + 50 + 0 + 1 + 551 = 666.

It is not a de Polignac number, because 1016565001551 - 2⁵ = 1016565001519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016565001553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1711388595 + ... + 1711389188.

It is an arithmetic number, because the mean of its divisors is an integer number (102683333520).

Almost surely, 2^{1016565001551} is an apocalyptic number.

1016565001551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1016565001551 is a deficient number, since it is larger than the sum of its proper divisors (626368334769).

1016565001551 is a wasteful number, since it uses less digits than its factorization.

1016565001551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3422777803 (or 3422777797 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 1016565001551 in words is "one trillion, sixteen billion, five hundred sixty-five million, one thousand, five hundred fifty-one".