1616155400085 has 8 divisors (see below), whose sum is σ = 2585848640160. Its totient is φ = 861949546704.

The previous prime is 1616155400039. The next prime is 1616155400099. The reversal of 1616155400085 is 5800045516161.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1616155400085 - 2⁶ = 1616155400021 is a prime.

It is a super-2 number, since 2×1616155400085² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53871846655 + ... + 53871846684.

It is an arithmetic number, because the mean of its divisors is an integer number (323231080020).

Almost surely, 2^{1616155400085} is an apocalyptic number.

1616155400085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1616155400085 is a deficient number, since it is larger than the sum of its proper divisors (969693240075).

1616155400085 is a wasteful number, since it uses less digits than its factorization.

1616155400085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107743693347.

The product of its (nonzero) digits is 144000, while the sum is 42.

The spelling of 1616155400085 in words is "one trillion, six hundred sixteen billion, one hundred fifty-five million, four hundred thousand, eighty-five".