16776764540 has 24 divisors (see below), whose sum is σ = 35234011680. Its totient is φ = 6710171328.

The previous prime is 16776764503. The next prime is 16776764573. The reversal of 16776764540 is 4546767761.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310154 + ... + 360206.

It is an arithmetic number, because the mean of its divisors is an integer number (1468083820).

Almost surely, 2^16776764540 is an apocalyptic number.

16776764540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16776764540 is an abundant number, since it is smaller than the sum of its proper divisors (18457247140).

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

16776764540 is a wasteful number, since it uses less digits than its factorization.

16776764540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66821 (or 66819 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 53.

The spelling of 16776764540 in words is "sixteen billion, seven hundred seventy-six million, seven hundred sixty-four thousand, five hundred forty".