20406620244 has 24 divisors (see below), whose sum is σ = 47618135488. Its totient is φ = 6801822720.

The previous prime is 20406620231. The next prime is 20406620287. The reversal of 20406620244 is 44202660402.

It is a super-4 number, since 4×20406620244⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244884 + ... + 317460.

Almost surely, 2^20406620244 is an apocalyptic number.

It is an amenable number.

20406620244 is an abundant number, since it is smaller than the sum of its proper divisors (27211515244).

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

20406620244 is a wasteful number, since it uses less digits than its factorization.

20406620244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96015 (or 96013 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The spelling of 20406620244 in words is "twenty billion, four hundred six million, six hundred twenty thousand, two hundred forty-four".