16940157648 has 60 divisors (see below), whose sum is σ = 44603707680. Its totient is φ = 5540133248.

The previous prime is 16940157631. The next prime is 16940157653. The reversal of 16940157648 is 84675104961.

It is a super-2 number, since 2×16940157648² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16940157648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72013 + ... + 197651.

It is an arithmetic number, because the mean of its divisors is an integer number (743395128).

Almost surely, 2^16940157648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16940157648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22301853840).

16940157648 is an abundant number, since it is smaller than the sum of its proper divisors (27663550032).

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

16940157648 is a wasteful number, since it uses less digits than its factorization.

16940157648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125756 (or 125697 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 16940157648 in words is "sixteen billion, nine hundred forty million, one hundred fifty-seven thousand, six hundred forty-eight".