16678702407 has 16 divisors (see below), whose sum is σ = 22324605408. Its totient is φ = 11076003840.

The previous prime is 16678702393. The next prime is 16678702421. The reversal of 16678702407 is 70420787661.

It is an interprime number because it is at equal distance from previous prime (16678702393) and next prime (16678702421).

It is not a de Polignac number, because 16678702407 - 2⁷ = 16678702279 is a prime.

It is a super-2 number, since 2×16678702407² (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 (16678702427) 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, 3155607 + ... + 3160887.

It is an arithmetic number, because the mean of its divisors is an integer number (1395287838).

Almost surely, 2^16678702407 is an apocalyptic number.

16678702407 is a deficient number, since it is larger than the sum of its proper divisors (5645903001).

16678702407 is a wasteful number, since it uses less digits than its factorization.

16678702407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9170.

The product of its (nonzero) digits is 790272, while the sum is 48.

The spelling of 16678702407 in words is "sixteen billion, six hundred seventy-eight million, seven hundred two thousand, four hundred seven".