1065662551431 has 6 divisors (see below), whose sum is σ = 1539290352080. Its totient is φ = 710441700948.

The previous prime is 1065662551417. The next prime is 1065662551441. The reversal of 1065662551431 is 1341552665601.

1065662551431 is a `hidden beast` number, since 1 + 0 + 6 + 5 + 6 + 62 + 551 + 4 + 31 = 666.

It is not a de Polignac number, because 1065662551431 - 2¹⁵ = 1065662518663 is a prime.

It is a super-2 number, since 2×1065662551431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065662551411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59203475071 + ... + 59203475088.

Almost surely, 2^{1065662551431} is an apocalyptic number.

1065662551431 is a deficient number, since it is larger than the sum of its proper divisors (473627800649).

1065662551431 is a wasteful number, since it uses less digits than its factorization.

1065662551431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118406950165 (or 118406950162 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 1065662551431 in words is "one trillion, sixty-five billion, six hundred sixty-two million, five hundred fifty-one thousand, four hundred thirty-one".