16155115566601 has 8 divisors (see below), whose sum is σ = 17624322849600. Its totient is φ = 14686001685840.

The previous prime is 16155115566589. The next prime is 16155115566607. The reversal of 16155115566601 is 10666551155161.

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

It is a cyclic number.

It is not a de Polignac number, because 16155115566601 - 2¹³ = 16155115558409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16155115566607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22988661 + ... + 23680978.

It is an arithmetic number, because the mean of its divisors is an integer number (2203040356200).

Almost surely, 2^{16155115566601} is an apocalyptic number.

16155115566601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16155115566601 is a deficient number, since it is larger than the sum of its proper divisors (1469207282999).

16155115566601 is a wasteful number, since it uses less digits than its factorization.

16155115566601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46701119.

The product of its (nonzero) digits is 810000, while the sum is 49.

The spelling of 16155115566601 in words is "sixteen trillion, one hundred fifty-five billion, one hundred fifteen million, five hundred sixty-six thousand, six hundred one".