16627991654 has 8 divisors (see below), whose sum is σ = 25132384728. Its totient is φ = 8250530080.

The previous prime is 16627991599. The next prime is 16627991659. The reversal of 16627991654 is 45619972661.

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

It is a self number, because there is not a number n which added to its sum of digits gives 16627991654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16627991659) 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, 31732547 + ... + 31733070.

It is an arithmetic number, because the mean of its divisors is an integer number (3141548091).

Almost surely, 2^16627991654 is an apocalyptic number.

16627991654 is a deficient number, since it is larger than the sum of its proper divisors (8504393074).

16627991654 is a wasteful number, since it uses less digits than its factorization.

16627991654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63465750.

The product of its digits is 4898880, while the sum is 56.

The spelling of 16627991654 in words is "sixteen billion, six hundred twenty-seven million, nine hundred ninety-one thousand, six hundred fifty-four".