16726512440 has 96 divisors (see below), whose sum is σ = 43544466000. Its totient is φ = 5762211840.

The previous prime is 16726512437. The next prime is 16726512457. The reversal of 16726512440 is 4421562761.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 16726512394 and 16726512403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1016 + ... + 182904.

Almost surely, 2^16726512440 is an apocalyptic number.

16726512440 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 16726512440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21772233000).

16726512440 is an abundant number, since it is smaller than the sum of its proper divisors (26817953560).

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

16726512440 is a wasteful number, since it uses less digits than its factorization.

16726512440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181941 (or 181926 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 16726512440 in words is "sixteen billion, seven hundred twenty-six million, five hundred twelve thousand, four hundred forty".