1616422777673 has 4 divisors (see below), whose sum is σ = 1763370302928. Its totient is φ = 1469475252420.

The previous prime is 1616422777661. The next prime is 1616422777679. The reversal of 1616422777673 is 3767772246161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1616422777673 - 2³⁰ = 1615349035849 is a prime.

It is a super-2 number, since 2×1616422777673² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1616422777679) 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, 73473762611 + ... + 73473762632.

It is an arithmetic number, because the mean of its divisors is an integer number (440842575732).

Almost surely, 2^{1616422777673} is an apocalyptic number.

It is an amenable number.

1616422777673 is a deficient number, since it is larger than the sum of its proper divisors (146947525255).

1616422777673 is a wasteful number, since it uses less digits than its factorization.

1616422777673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146947525254.

The product of its digits is 24893568, while the sum is 59.

The spelling of 1616422777673 in words is "one trillion, six hundred sixteen billion, four hundred twenty-two million, seven hundred seventy-seven thousand, six hundred seventy-three".