16726537272440 has 16 divisors (see below), whose sum is σ = 37634708863080. Its totient is φ = 6690614908960.

The previous prime is 16726537272437. The next prime is 16726537272457. The reversal of 16726537272440 is 4427273562761.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209081715866 + ... + 209081715945.

Almost surely, 2^{16726537272440} is an apocalyptic number.

16726537272440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16726537272440 is an abundant number, since it is smaller than the sum of its proper divisors (20908171590640).

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

16726537272440 is a wasteful number, since it uses less digits than its factorization.

16726537272440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418163431822 (or 418163431818 counting only the distinct ones).

The product of its (nonzero) digits is 23708160, while the sum is 56.

The spelling of 16726537272440 in words is "sixteen trillion, seven hundred twenty-six billion, five hundred thirty-seven million, two hundred seventy-two thousand, four hundred forty".