16694719457 has 16 divisors (see below), whose sum is σ = 19041039360. Its totient is φ = 14500561152.

The previous prime is 16694719409. The next prime is 16694719463. The reversal of 16694719457 is 75491749661.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16694719457 - 2⁸ = 16694719201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16694719396 and 16694719405.

It is not an unprimeable number, because it can be changed into a prime (16694718457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1479278 + ... + 1490520.

It is an arithmetic number, because the mean of its divisors is an integer number (1190064960).

Almost surely, 2^16694719457 is an apocalyptic number.

16694719457 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16694719457 is a deficient number, since it is larger than the sum of its proper divisors (2346319903).

16694719457 is a wasteful number, since it uses less digits than its factorization.

16694719457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17992.

The product of its digits is 11430720, while the sum is 59.

The spelling of 16694719457 in words is "sixteen billion, six hundred ninety-four million, seven hundred nineteen thousand, four hundred fifty-seven".