16562343644 has 48 divisors (see below), whose sum is σ = 36169701120. Its totient is φ = 6446847360.

The previous prime is 16562343617. The next prime is 16562343709. The reversal of 16562343644 is 44634326561.

It is a super-2 number, since 2×16562343644² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 16562343595 and 16562343604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313367 + ... + 362385.

It is an arithmetic number, because the mean of its divisors is an integer number (753535440).

Almost surely, 2^16562343644 is an apocalyptic number.

16562343644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16562343644 is an abundant number, since it is smaller than the sum of its proper divisors (19607357476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16562343644 is a wasteful number, since it uses less digits than its factorization.

16562343644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50138 (or 50136 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 44.

The spelling of 16562343644 in words is "sixteen billion, five hundred sixty-two million, three hundred forty-three thousand, six hundred forty-four".