16774777640 has 32 divisors (see below), whose sum is σ = 37767600000. Its totient is φ = 6705582144.

The previous prime is 16774777637. The next prime is 16774777681. The reversal of 16774777640 is 4677747761.

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, 72140 + ... + 196859.

It is an arithmetic number, because the mean of its divisors is an integer number (1180237500).

Almost surely, 2^16774777640 is an apocalyptic number.

16774777640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16774777640 is an abundant number, since it is smaller than the sum of its proper divisors (20992822360).

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

16774777640 is a wasteful number, since it uses less digits than its factorization.

16774777640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270569 (or 270565 counting only the distinct ones).

The product of its (nonzero) digits is 9680832, while the sum is 56.

The spelling of 16774777640 in words is "sixteen billion, seven hundred seventy-four million, seven hundred seventy-seven thousand, six hundred forty".