16771805940 has 48 divisors (see below), whose sum is σ = 49723474752. Its totient is φ = 4209394176.

The previous prime is 16771805927. The next prime is 16771805983. The reversal of 16771805940 is 4950817761.

It is a self number, because there is not a number n which added to its sum of digits gives 16771805940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8220454 + ... + 8222493.

It is an arithmetic number, because the mean of its divisors is an integer number (1035905724).

Almost surely, 2^16771805940 is an apocalyptic number.

16771805940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16771805940 is an abundant number, since it is smaller than the sum of its proper divisors (32951668812).

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

16771805940 is a wasteful number, since it uses less digits than its factorization.

16771805940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16442976 (or 16442974 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 16771805940 in words is "sixteen billion, seven hundred seventy-one million, eight hundred five thousand, nine hundred forty".