1642708547623 has 16 divisors (see below), whose sum is σ = 1930052619936. Its totient is φ = 1378384352640.

The previous prime is 1642708547611. The next prime is 1642708547659. The reversal of 1642708547623 is 3267458072461.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1642708547623 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 (1642708541623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1316665 + ... + 2240317.

It is an arithmetic number, because the mean of its divisors is an integer number (120628288746).

Almost surely, 2^{1642708547623} is an apocalyptic number.

1642708547623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1642708547623 is a deficient number, since it is larger than the sum of its proper divisors (287344072313).

1642708547623 is a wasteful number, since it uses less digits than its factorization.

1642708547623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936114.

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 1642708547623 in words is "one trillion, six hundred forty-two billion, seven hundred eight million, five hundred forty-seven thousand, six hundred twenty-three".