1020406335623 has 4 divisors (see below), whose sum is σ = 1020451079760. Its totient is φ = 1020361591488.

The previous prime is 1020406335593. The next prime is 1020406335629. The reversal of 1020406335623 is 3265336040201.

1020406335623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1020406335623 - 2²⁶ = 1020339226759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020406335629) 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, 22337843 + ... + 22383476.

It is an arithmetic number, because the mean of its divisors is an integer number (255112769940).

Almost surely, 2^{1020406335623} is an apocalyptic number.

1020406335623 is a deficient number, since it is larger than the sum of its proper divisors (44744137).

1020406335623 is an equidigital number, since it uses as much as digits as its factorization.

1020406335623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44744136.

The product of its (nonzero) digits is 77760, while the sum is 35.

The spelling of 1020406335623 in words is "one trillion, twenty billion, four hundred six million, three hundred thirty-five thousand, six hundred twenty-three".