20512046044 has 24 divisors (see below), whose sum is σ = 41253287040. Its totient is φ = 8741763696.

The previous prime is 20512046029. The next prime is 20512046053. The reversal of 20512046044 is 44064021502.

It is a super-2 number, since 2×20512046044² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 2041282 + ... + 2051305.

It is an arithmetic number, because the mean of its divisors is an integer number (1718886960).

Almost surely, 2^20512046044 is an apocalyptic number.

It is an amenable number.

20512046044 is an abundant number, since it is smaller than the sum of its proper divisors (20741240996).

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

20512046044 is a wasteful number, since it uses less digits than its factorization.

20512046044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4092777 (or 4092775 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 20512046044 its reverse (44064021502), we get a palindrome (64576067546).

The spelling of 20512046044 in words is "twenty billion, five hundred twelve million, forty-six thousand, forty-four".