20305550554 has 8 divisors (see below), whose sum is σ = 30458930400. Its totient is φ = 10152573756.

The previous prime is 20305550539. The next prime is 20305550557. The reversal of 20305550554 is 45505550302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20305550557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150987 + ... + 251809.

It is an arithmetic number, because the mean of its divisors is an integer number (3807366300).

Almost surely, 2^20305550554 is an apocalyptic number.

20305550554 is a deficient number, since it is larger than the sum of its proper divisors (10153379846).

20305550554 is a wasteful number, since it uses less digits than its factorization.

20305550554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201524.

The product of its (nonzero) digits is 75000, while the sum is 34.

The spelling of 20305550554 in words is "twenty billion, three hundred five million, five hundred fifty thousand, five hundred fifty-four".