1617276520623 has 4 divisors (see below), whose sum is σ = 2156368694168. Its totient is φ = 1078184347080.

The previous prime is 1617276520583. The next prime is 1617276520669. The reversal of 1617276520623 is 3260256727161.

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

It is not a de Polignac number, because 1617276520623 - 2³⁸ = 1342398613679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1617276527623) 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, 269546086768 + ... + 269546086773.

It is an arithmetic number, because the mean of its divisors is an integer number (539092173542).

Almost surely, 2^{1617276520623} is an apocalyptic number.

1617276520623 is a deficient number, since it is larger than the sum of its proper divisors (539092173545).

1617276520623 is an equidigital number, since it uses as much as digits as its factorization.

1617276520623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539092173544.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 1617276520623 in words is "one trillion, six hundred seventeen billion, two hundred seventy-six million, five hundred twenty thousand, six hundred twenty-three".