1056051666165 has 32 divisors (see below), whose sum is σ = 1798442735616. Its totient is φ = 527321123840.

The previous prime is 1056051666101. The next prime is 1056051666167. The reversal of 1056051666165 is 5616661506501.

It is not a de Polignac number, because 1056051666165 - 2⁶ = 1056051666101 is a prime.

It is a super-2 number, since 2×1056051666165² (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 (1056051666167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10792602 + ... + 10890011.

It is an arithmetic number, because the mean of its divisors is an integer number (56201335488).

Almost surely, 2^{1056051666165} is an apocalyptic number.

1056051666165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1056051666165 is a deficient number, since it is larger than the sum of its proper divisors (742391069451).

1056051666165 is a wasteful number, since it uses less digits than its factorization.

1056051666165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21682829.

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 1056051666165 in words is "one trillion, fifty-six billion, fifty-one million, six hundred sixty-six thousand, one hundred sixty-five".