16556132154157 has 4 divisors (see below), whose sum is σ = 16556506289116. Its totient is φ = 16555758019200.

The previous prime is 16556132154119. The next prime is 16556132154173. The reversal of 16556132154157 is 75145123165561.

16556132154157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9967084670761 + 6589047483396 = 3157069^2 + 2566914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16556132154157 is a prime.

It is a super-2 number, since 2×16556132154157² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16556132154557) 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, 187001094 + ... + 187089607.

It is an arithmetic number, because the mean of its divisors is an integer number (4139126572279).

Almost surely, 2^{16556132154157} is an apocalyptic number.

It is an amenable number.

16556132154157 is a deficient number, since it is larger than the sum of its proper divisors (374134959).

16556132154157 is an equidigital number, since it uses as much as digits as its factorization.

16556132154157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374134958.

The product of its digits is 3780000, while the sum is 52.

The spelling of 16556132154157 in words is "sixteen trillion, five hundred fifty-six billion, one hundred thirty-two million, one hundred fifty-four thousand, one hundred fifty-seven".