1066051051551 has 12 divisors (see below), whose sum is σ = 1540102756920. Its totient is φ = 710584745040.

The previous prime is 1066051051531. The next prime is 1066051051561. The reversal of 1066051051551 is 1551501506601.

It is a happy number.

1066051051551 is a `hidden beast` number, since 1 + 0 + 6 + 6 + 0 + 51 + 0 + 51 + 551 = 666.

It is not a de Polignac number, because 1066051051551 - 2¹⁰ = 1066051050527 is a prime.

It is a super-2 number, since 2×1066051051551² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066051051531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9604756 + ... + 9715113.

It is an arithmetic number, because the mean of its divisors is an integer number (128341896410).

Almost surely, 2^{1066051051551} is an apocalyptic number.

1066051051551 is a deficient number, since it is larger than the sum of its proper divisors (474051705369).

1066051051551 is a wasteful number, since it uses less digits than its factorization.

1066051051551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19326006 (or 19326003 counting only the distinct ones).

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

The spelling of 1066051051551 in words is "one trillion, sixty-six billion, fifty-one million, fifty-one thousand, five hundred fifty-one".