20022430454646 has 16 divisors (see below), whose sum is σ = 40045041105600. Its totient is φ = 6674113452168.

The previous prime is 20022430454639. The next prime is 20022430454671. The reversal of 20022430454646 is 64645403422002.

It is a super-2 number, since 2×20022430454646² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20022430454598 and 20022430454607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6041656 + ... + 8749083.

It is an arithmetic number, because the mean of its divisors is an integer number (2502815069100).

Almost surely, 2^{20022430454646} is an apocalyptic number.

20022430454646 is an abundant number, since it is smaller than the sum of its proper divisors (20022610650954).

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

20022430454646 is a wasteful number, since it uses less digits than its factorization.

20022430454646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15016363.

The product of its (nonzero) digits is 1105920, while the sum is 42.

Adding to 20022430454646 its reverse (64645403422002), we get a palindrome (84667833876648).

The spelling of 20022430454646 in words is "twenty trillion, twenty-two billion, four hundred thirty million, four hundred fifty-four thousand, six hundred forty-six".