20554624740 has 96 divisors (see below), whose sum is σ = 62066382336. Its totient is φ = 5052556800.

The previous prime is 20554624733. The next prime is 20554624757. The reversal of 20554624740 is 4742645502.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 553765 + ... + 589715.

It is an arithmetic number, because the mean of its divisors is an integer number (646524816).

Almost surely, 2^20554624740 is an apocalyptic number.

20554624740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20554624740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31033191168).

20554624740 is an abundant number, since it is smaller than the sum of its proper divisors (41511757596).

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

20554624740 is a wasteful number, since it uses less digits than its factorization.

20554624740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36709 (or 36707 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 39.

The spelling of 20554624740 in words is "twenty billion, five hundred fifty-four million, six hundred twenty-four thousand, seven hundred forty".