16128653378 has 4 divisors (see below), whose sum is σ = 24192980070. Its totient is φ = 8064326688.

The previous prime is 16128653363. The next prime is 16128653399. The reversal of 16128653378 is 87335682161.

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., 16097773129 + 30880249 = 126877^2 + 5557^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4032163343 + ... + 4032163346.

Almost surely, 2^16128653378 is an apocalyptic number.

16128653378 is a deficient number, since it is larger than the sum of its proper divisors (8064326692).

16128653378 is an equidigital number, since it uses as much as digits as its factorization.

16128653378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8064326691.

The product of its digits is 1451520, while the sum is 50.

The spelling of 16128653378 in words is "sixteen billion, one hundred twenty-eight million, six hundred fifty-three thousand, three hundred seventy-eight".