20406062242644 has 48 divisors (see below), whose sum is σ = 51344508905088. Its totient is φ = 6270494041728.

The previous prime is 20406062242583. The next prime is 20406062242649. The reversal of 20406062242644 is 44624226060402.

It is a happy number.

It is a super-2 number, since 2×20406062242644² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20406062242596 and 20406062242605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20406062242649) 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, 86280912 + ... + 86517095.

It is an arithmetic number, because the mean of its divisors is an integer number (1069677268856).

Almost surely, 2^{20406062242644} is an apocalyptic number.

It is an amenable number.

20406062242644 is an abundant number, since it is smaller than the sum of its proper divisors (30938446662444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20406062242644 is a wasteful number, since it uses less digits than its factorization.

20406062242644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172798784 (or 172798782 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 42.

The spelling of 20406062242644 in words is "twenty trillion, four hundred six billion, sixty-two million, two hundred forty-two thousand, six hundred forty-four".