16526440000 has 140 divisors (see below), whose sum is σ = 46835307904. Its totient is φ = 5666112000.

The previous prime is 16526439973. The next prime is 16526440003. The reversal of 16526440000 is 4462561.

It is a tau number, because it is divible by the number of its divisors (140).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (16526440003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 250489 + ... + 309511.

Almost surely, 2^16526440000 is an apocalyptic number.

16526440000 is a gapful number since it is divisible by the number (10) 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 16526440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23417653952).

16526440000 is an abundant number, since it is smaller than the sum of its proper divisors (30308867904).

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

16526440000 is an frugal number, since it uses more digits than its factorization.

16526440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59062 (or 59037 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 16526440000 in words is "sixteen billion, five hundred twenty-six million, four hundred forty thousand".