16634642254 has 8 divisors (see below), whose sum is σ = 24966672048. Its totient is φ = 8312418240.

The previous prime is 16634642209. The next prime is 16634642261. The reversal of 16634642254 is 45224643661.

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

It is a super-2 number, since 2×16634642254² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16634642254.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2447202 + ... + 2453989.

It is an arithmetic number, because the mean of its divisors is an integer number (3120834006).

Almost surely, 2^16634642254 is an apocalyptic number.

16634642254 is a deficient number, since it is larger than the sum of its proper divisors (8332029794).

16634642254 is a wasteful number, since it uses less digits than its factorization.

16634642254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4902890.

The product of its digits is 829440, while the sum is 43.

The spelling of 16634642254 in words is "sixteen billion, six hundred thirty-four million, six hundred forty-two thousand, two hundred fifty-four".