16736555864 has 64 divisors (see below), whose sum is σ = 37123963200. Its totient is φ = 6921137664.

The previous prime is 16736555863. The next prime is 16736555881. The reversal of 16736555864 is 46855563761.

It is a super-2 number, since 2×16736555864² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16736555863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4735442 + ... + 4738974.

It is an arithmetic number, because the mean of its divisors is an integer number (580061925).

Almost surely, 2^16736555864 is an apocalyptic number.

16736555864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16736555864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18561981600).

16736555864 is an abundant number, since it is smaller than the sum of its proper divisors (20387407336).

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

16736555864 is a wasteful number, since it uses less digits than its factorization.

16736555864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6492 (or 6488 counting only the distinct ones).

The product of its digits is 18144000, while the sum is 56.

The spelling of 16736555864 in words is "sixteen billion, seven hundred thirty-six million, five hundred fifty-five thousand, eight hundred sixty-four".