16503344351 has 8 divisors (see below), whose sum is σ = 17886037344. Its totient is φ = 15136823520.

The previous prime is 16503344339. The next prime is 16503344393. The reversal of 16503344351 is 15344330561.

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

It is a de Polignac number, because none of the positive numbers 2^k-16503344351 is a prime.

It is a super-2 number, since 2×16503344351² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16503349351) 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, 4040915 + ... + 4044996.

It is an arithmetic number, because the mean of its divisors is an integer number (2235754668).

Almost surely, 2^16503344351 is an apocalyptic number.

16503344351 is a deficient number, since it is larger than the sum of its proper divisors (1382692993).

16503344351 is a wasteful number, since it uses less digits than its factorization.

16503344351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8086081.

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 16503344351 in words is "sixteen billion, five hundred three million, three hundred forty-four thousand, three hundred fifty-one".