1011056511165 has 8 divisors (see below), whose sum is σ = 1617690417888. Its totient is φ = 539230139280.

The previous prime is 1011056511131. The next prime is 1011056511173. The reversal of 1011056511165 is 5611156501101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1011056511165 - 2³⁴ = 993876641981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33701883691 + ... + 33701883720.

It is an arithmetic number, because the mean of its divisors is an integer number (202211302236).

Almost surely, 2^{1011056511165} is an apocalyptic number.

1011056511165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1011056511165 is a deficient number, since it is larger than the sum of its proper divisors (606633906723).

1011056511165 is an equidigital number, since it uses as much as digits as its factorization.

1011056511165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67403767419.

The product of its (nonzero) digits is 4500, while the sum is 33.

The spelling of 1011056511165 in words is "one trillion, eleven billion, fifty-six million, five hundred eleven thousand, one hundred sixty-five".