16001211678 has 16 divisors (see below), whose sum is σ = 32014225920. Its totient is φ = 5331770136.

The previous prime is 16001211661. The next prime is 16001211679. The reversal of 16001211678 is 87611210061.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16001211679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474100 + ... + 506727.

It is an arithmetic number, because the mean of its divisors is an integer number (2000889120).

Almost surely, 2^16001211678 is an apocalyptic number.

16001211678 is an abundant number, since it is smaller than the sum of its proper divisors (16013014242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16001211678 is a wasteful number, since it uses less digits than its factorization.

16001211678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983551.

The product of its (nonzero) digits is 4032, while the sum is 33.

The spelling of 16001211678 in words is "sixteen billion, one million, two hundred eleven thousand, six hundred seventy-eight".