16261321654 has 8 divisors (see below), whose sum is σ = 24685862040. Its totient is φ = 8032700976.

The previous prime is 16261321621. The next prime is 16261321679. The reversal of 16261321654 is 45612316261.

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

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, 48979719 + ... + 48980050.

It is an arithmetic number, because the mean of its divisors is an integer number (3085732755).

Almost surely, 2^16261321654 is an apocalyptic number.

16261321654 is a deficient number, since it is larger than the sum of its proper divisors (8424540386).

16261321654 is an equidigital number, since it uses as much as digits as its factorization.

16261321654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97959854.

The product of its digits is 51840, while the sum is 37.

The spelling of 16261321654 in words is "sixteen billion, two hundred sixty-one million, three hundred twenty-one thousand, six hundred fifty-four".