106855764545 has 16 divisors (see below), whose sum is σ = 130836210768. Its totient is φ = 83755991040.

The previous prime is 106855764493. The next prime is 106855764551. The reversal of 106855764545 is 545467558601.

It is a Cunningham number, because it is equal to 326888²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 3474866704 + 103380897841 = 58948^2 + 321529^2 .

It is not a de Polignac number, because 106855764545 - 2¹⁶ = 106855699009 is a prime.

It is a super-2 number, since 2×106855764545² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 603224 + ... + 759993.

It is an arithmetic number, because the mean of its divisors is an integer number (8177263173).

Almost surely, 2^106855764545 is an apocalyptic number.

It is an amenable number.

106855764545 is a deficient number, since it is larger than the sum of its proper divisors (23980446223).

106855764545 is a wasteful number, since it uses less digits than its factorization.

106855764545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363540.

The product of its (nonzero) digits is 20160000, while the sum is 56.

The spelling of 106855764545 in words is "one hundred six billion, eight hundred fifty-five million, seven hundred sixty-four thousand, five hundred forty-five".