20670266534644 has 12 divisors (see below), whose sum is σ = 36173004580804. Its totient is φ = 10335122368704.

The previous prime is 20670266534641. The next prime is 20670266534647. The reversal of 20670266534644 is 44643566207602.

It is an interprime number because it is at equal distance from previous prime (20670266534641) and next prime (20670266534647).

It can be written as a sum of positive squares in 2 ways, for example, as 6014079379044 + 14656187155600 = 2452362^2 + 3828340^2 .

It is a super-2 number, since 2×20670266534644² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20670266534641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2777032 + ... + 7003744.

Almost surely, 2^{20670266534644} is an apocalyptic number.

It is an amenable number.

20670266534644 is a deficient number, since it is larger than the sum of its proper divisors (15502738046160).

20670266534644 is a wasteful number, since it uses less digits than its factorization.

20670266534644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5449314 (or 5449312 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 55.

The spelling of 20670266534644 in words is "twenty trillion, six hundred seventy billion, two hundred sixty-six million, five hundred thirty-four thousand, six hundred forty-four".