16293468416 has 18 divisors (see below), whose sum is σ = 32523290982. Its totient is φ = 8146734080.

The previous prime is 16293468329. The next prime is 16293468437. The reversal of 16293468416 is 61486439261.

It can be written as a sum of positive squares in only one way, i.e., 14018560000 + 2274908416 = 118400^2 + 47696^2 .

It is a super-2 number, since 2×16293468416² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31822925 + ... + 31823436.

It is an arithmetic number, because the mean of its divisors is an integer number (1806849499).

Almost surely, 2^16293468416 is an apocalyptic number.

16293468416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16293468416 is a deficient number, since it is larger than the sum of its proper divisors (16229822566).

16293468416 is an frugal number, since it uses more digits than its factorization.

16293468416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63646377 (or 63646363 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 50.

The spelling of 16293468416 in words is "sixteen billion, two hundred ninety-three million, four hundred sixty-eight thousand, four hundred sixteen".