20551541304 has 64 divisors (see below), whose sum is σ = 58731782400. Its totient is φ = 5870559744.

The previous prime is 20551541249. The next prime is 20551541333. The reversal of 20551541304 is 40314515502.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 939904 + ... + 961520.

It is an arithmetic number, because the mean of its divisors is an integer number (917684100).

Almost surely, 2^20551541304 is an apocalyptic number.

20551541304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20551541304 is an abundant number, since it is smaller than the sum of its proper divisors (38180241096).

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

20551541304 is a wasteful number, since it uses less digits than its factorization.

20551541304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27292 (or 27288 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 20551541304 in words is "twenty billion, five hundred fifty-one million, five hundred forty-one thousand, three hundred four".