2011620405023 has 4 divisors (see below), whose sum is σ = 2011624047888. Its totient is φ = 2011616762160.

The previous prime is 2011620405001. The next prime is 2011620405103. The reversal of 2011620405023 is 3205040261102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2011620405023 - 2¹⁴ = 2011620388639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011620404983 and 2011620405001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011620405323) 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, 803486 + ... + 2160747.

It is an arithmetic number, because the mean of its divisors is an integer number (502906011972).

Almost surely, 2^{2011620405023} is an apocalyptic number.

2011620405023 is a deficient number, since it is larger than the sum of its proper divisors (3642865).

2011620405023 is an equidigital number, since it uses as much as digits as its factorization.

2011620405023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3642864.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 2011620405023 its reverse (3205040261102), we get a palindrome (5216660666125).

The spelling of 2011620405023 in words is "two trillion, eleven billion, six hundred twenty million, four hundred five thousand, twenty-three".