16156557151557 has 8 divisors (see below), whose sum is σ = 21801619289184. Its totient is φ = 10641266557488.

The previous prime is 16156557151523. The next prime is 16156557151577. The reversal of 16156557151557 is 75515175565161.

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

It is not a de Polignac number, because 16156557151557 - 2¹² = 16156557147461 is a prime.

It is a super-4 number, since 4×16156557151557⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 16156557151557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16156557151577) 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, 32442885598 + ... + 32442886095.

It is an arithmetic number, because the mean of its divisors is an integer number (2725202411148).

Almost surely, 2^{16156557151557} is an apocalyptic number.

It is an amenable number.

16156557151557 is a deficient number, since it is larger than the sum of its proper divisors (5645062137627).

16156557151557 is an equidigital number, since it uses as much as digits as its factorization.

16156557151557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64885771779.

The product of its digits is 27562500, while the sum is 60.

The spelling of 16156557151557 in words is "sixteen trillion, one hundred fifty-six billion, five hundred fifty-seven million, one hundred fifty-one thousand, five hundred fifty-seven".