16157742646 has 8 divisors (see below), whose sum is σ = 24598354680. Its totient is φ = 7958291088.

The previous prime is 16157742637. The next prime is 16157742661. The reversal of 16157742646 is 64624775161.

16157742646 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×16157742646² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16157742646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60289951 + ... + 60290218.

It is an arithmetic number, because the mean of its divisors is an integer number (3074794335).

Almost surely, 2^16157742646 is an apocalyptic number.

16157742646 is a deficient number, since it is larger than the sum of its proper divisors (8440612034).

16157742646 is a wasteful number, since it uses less digits than its factorization.

16157742646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120580238.

The product of its digits is 1693440, while the sum is 49.

The spelling of 16157742646 in words is "sixteen billion, one hundred fifty-seven million, seven hundred forty-two thousand, six hundred forty-six".