2061155023 has 4 divisors (see below), whose sum is σ = 2069367048. Its totient is φ = 2052943000.

The previous prime is 2061154973. The next prime is 2061155053. The reversal of 2061155023 is 3205511602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2061155023 is a prime.

It is a super-3 number, since 3×2061155023³ (a number of 29 digits) contains 333 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 (2061155053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4105636 + ... + 4106137.

It is an arithmetic number, because the mean of its divisors is an integer number (517341762).

Almost surely, 2^2061155023 is an apocalyptic number.

2061155023 is a deficient number, since it is larger than the sum of its proper divisors (8212025).

2061155023 is an equidigital number, since it uses as much as digits as its factorization.

2061155023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8212024.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2061155023 is about 45399.9451871916. The cubic root of 2061155023 is about 1272.6340895929.

Adding to 2061155023 its reverse (3205511602), we get a palindrome (5266666625).

The spelling of 2061155023 in words is "two billion, sixty-one million, one hundred fifty-five thousand, twenty-three".