16701478321 has 4 divisors (see below), whose sum is σ = 18219794544. Its totient is φ = 15183162100.

The previous prime is 16701478307. The next prime is 16701478327. The reversal of 16701478321 is 12387410761.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16701478321 - 2⁷ = 16701478193 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16701478327) 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, 759158095 + ... + 759158116.

It is an arithmetic number, because the mean of its divisors is an integer number (4554948636).

Almost surely, 2^16701478321 is an apocalyptic number.

16701478321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16701478321 is a deficient number, since it is larger than the sum of its proper divisors (1518316223).

16701478321 is a wasteful number, since it uses less digits than its factorization.

16701478321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518316222.

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 16701478321 in words is "sixteen billion, seven hundred one million, four hundred seventy-eight thousand, three hundred twenty-one".