16243525727378 has 4 divisors (see below), whose sum is σ = 24365288591070. Its totient is φ = 8121762863688.

The previous prime is 16243525727371. The next prime is 16243525727423. The reversal of 16243525727378 is 87372752534261.

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

It can be written as a sum of positive squares in only one way, i.e., 13562699121049 + 2680826606329 = 3682757^2 + 1637323^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16243525727378.

It is not an unprimeable number, because it can be changed into a prime (16243525727371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4060881431843 + ... + 4060881431846.

Almost surely, 2^{16243525727378} is an apocalyptic number.

16243525727378 is a deficient number, since it is larger than the sum of its proper divisors (8121762863692).

16243525727378 is an equidigital number, since it uses as much as digits as its factorization.

16243525727378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8121762863691.

The product of its digits is 118540800, while the sum is 62.

The spelling of 16243525727378 in words is "sixteen trillion, two hundred forty-three billion, five hundred twenty-five million, seven hundred twenty-seven thousand, three hundred seventy-eight".