16940779487 has 12 divisors (see below), whose sum is σ = 17957490120. Its totient is φ = 15978997872.

The previous prime is 16940779469. The next prime is 16940779489. The reversal of 16940779487 is 78497704961.

It is not a de Polignac number, because 16940779487 - 2¹² = 16940775391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16940779489) 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, 19793 + ... + 185130.

It is an arithmetic number, because the mean of its divisors is an integer number (1496457510).

Almost surely, 2^16940779487 is an apocalyptic number.

16940779487 is a deficient number, since it is larger than the sum of its proper divisors (1016710633).

16940779487 is a wasteful number, since it uses less digits than its factorization.

16940779487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205190 (or 205171 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 62.

The spelling of 16940779487 in words is "sixteen billion, nine hundred forty million, seven hundred seventy-nine thousand, four hundred eighty-seven".