1151010565551 has 24 divisors (see below), whose sum is σ = 2072815565184. Its totient is φ = 597927566160.

The previous prime is 1151010565489. The next prime is 1151010565567. The reversal of 1151010565551 is 1555650101511.

1151010565551 is a `hidden beast` number, since 1 + 1 + 51 + 0 + 1 + 0 + 56 + 5 + 551 = 666.

It is not a de Polignac number, because 1151010565551 - 2¹¹ = 1151010563503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151010565051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 830454261 + ... + 830455646.

It is an arithmetic number, because the mean of its divisors is an integer number (86367315216).

Almost surely, 2^{1151010565551} is an apocalyptic number.

1151010565551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1151010565551 is a deficient number, since it is larger than the sum of its proper divisors (921804999633).

1151010565551 is a wasteful number, since it uses less digits than its factorization.

1151010565551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660909931 (or 1660909928 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 36.

The spelling of 1151010565551 in words is "one trillion, one hundred fifty-one billion, ten million, five hundred sixty-five thousand, five hundred fifty-one".