16478720766 has 24 divisors (see below), whose sum is σ = 35706289320. Its totient is φ = 5492538576.

The previous prime is 16478720761. The next prime is 16478720831. The reversal of 16478720766 is 66702787461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16478720761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 441480 + ... + 477348.

It is an arithmetic number, because the mean of its divisors is an integer number (1487762055).

Almost surely, 2^16478720766 is an apocalyptic number.

16478720766 is an abundant number, since it is smaller than the sum of its proper divisors (19227568554).

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

16478720766 is a wasteful number, since it uses less digits than its factorization.

16478720766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61400 (or 61397 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 54.

The spelling of 16478720766 in words is "sixteen billion, four hundred seventy-eight million, seven hundred twenty thousand, seven hundred sixty-six".