16155515061601 has 8 divisors (see below), whose sum is σ = 16169186214144. Its totient is φ = 16141844665440.

The previous prime is 16155515061571. The next prime is 16155515061629. The reversal of 16155515061601 is 10616051555161.

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 16155515061601 - 2²³ = 16155506672993 is a prime.

It is a super-2 number, since 2×16155515061601² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16155515061401) 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, 47646696 + ... + 47984566.

It is an arithmetic number, because the mean of its divisors is an integer number (2021148276768).

Almost surely, 2^{16155515061601} is an apocalyptic number.

It is an amenable number.

16155515061601 is a deficient number, since it is larger than the sum of its proper divisors (13671152543).

16155515061601 is a wasteful number, since it uses less digits than its factorization.

16155515061601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378191.

The product of its (nonzero) digits is 135000, while the sum is 43.

The spelling of 16155515061601 in words is "sixteen trillion, one hundred fifty-five billion, five hundred fifteen million, sixty-one thousand, six hundred one".