16687396710 has 128 divisors (see below), whose sum is σ = 44880739200. Its totient is φ = 4412067840.

The previous prime is 16687396657. The next prime is 16687396763. The reversal of 16687396710 is 1769378661.

It is a happy number.

16687396710 is a `hidden beast` number, since 166 + 87 + 396 + 7 + 10 = 666.

It is an interprime number because it is at equal distance from previous prime (16687396657) and next prime (16687396763).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20626786 + ... + 20627594.

It is an arithmetic number, because the mean of its divisors is an integer number (350630775).

Almost surely, 2^16687396710 is an apocalyptic number.

16687396710 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16687396710, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22440369600).

16687396710 is an abundant number, since it is smaller than the sum of its proper divisors (28193342490).

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

16687396710 is a wasteful number, since it uses less digits than its factorization.

16687396710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383 (or 1377 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 16687396710 in words is "sixteen billion, six hundred eighty-seven million, three hundred ninety-six thousand, seven hundred ten".