20616111607 has 16 divisors (see below), whose sum is σ = 25414869312. Its totient is φ = 16285167360.

The previous prime is 20616111553. The next prime is 20616111619. The reversal of 20616111607 is 70611161602.

It is not a de Polignac number, because 20616111607 - 2²³ = 20607722999 is a prime.

It is a super-3 number, since 3×20616111607³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20616111907) 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, 127444 + ... + 239737.

It is an arithmetic number, because the mean of its divisors is an integer number (1588429332).

Almost surely, 2^20616111607 is an apocalyptic number.

20616111607 is a deficient number, since it is larger than the sum of its proper divisors (4798757705).

20616111607 is a wasteful number, since it uses less digits than its factorization.

20616111607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367818.

The product of its (nonzero) digits is 3024, while the sum is 31.

The spelling of 20616111607 in words is "twenty billion, six hundred sixteen million, one hundred eleven thousand, six hundred seven".