16140776686 has 4 divisors (see below), whose sum is σ = 24211165032. Its totient is φ = 8070388342.

The previous prime is 16140776683. The next prime is 16140776719. The reversal of 16140776686 is 68667704161.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×16140776686² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16140776683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4035194170 + ... + 4035194173.

It is an arithmetic number, because the mean of its divisors is an integer number (6052791258).

Almost surely, 2^16140776686 is an apocalyptic number.

16140776686 is a deficient number, since it is larger than the sum of its proper divisors (8070388346).

16140776686 is an equidigital number, since it uses as much as digits as its factorization.

16140776686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8070388345.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 16140776686 in words is "sixteen billion, one hundred forty million, seven hundred seventy-six thousand, six hundred eighty-six".