20464222642620 has 48 divisors (see below), whose sum is σ = 57737226653568. Its totient is φ = 5415468585280.

The previous prime is 20464222642559. The next prime is 20464222642621. The reversal of 20464222642620 is 2624622246402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20464222642621) 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, 1301787474 + ... + 1301803193.

It is an arithmetic number, because the mean of its divisors is an integer number (1202858888616).

Almost surely, 2^{20464222642620} is an apocalyptic number.

20464222642620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20464222642620 is an abundant number, since it is smaller than the sum of its proper divisors (37273004010948).

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

20464222642620 is a wasteful number, since it uses less digits than its factorization.

20464222642620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603590810 (or 2603590808 counting only the distinct ones).

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

The spelling of 20464222642620 in words is "twenty trillion, four hundred sixty-four billion, two hundred twenty-two million, six hundred forty-two thousand, six hundred twenty".