220640106551 has 16 divisors (see below), whose sum is σ = 228105337824. Its totient is φ = 213258230784.

The previous prime is 220640106503. The next prime is 220640106559. The reversal of 220640106551 is 155601046022.

It is a cyclic number.

It is not a de Polignac number, because 220640106551 - 2⁶ = 220640106487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220640106559) 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, 3703340 + ... + 3762446.

It is an arithmetic number, because the mean of its divisors is an integer number (14256583614).

Almost surely, 2^220640106551 is an apocalyptic number.

220640106551 is a deficient number, since it is larger than the sum of its proper divisors (7465231273).

220640106551 is a wasteful number, since it uses less digits than its factorization.

220640106551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59810.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 220640106551 in words is "two hundred twenty billion, six hundred forty million, one hundred six thousand, five hundred fifty-one".