20304155554 has 8 divisors (see below), whose sum is σ = 32059193040. Its totient is φ = 9617757876.

The previous prime is 20304155539. The next prime is 20304155567. The reversal of 20304155554 is 45555140302.

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

It is a super-2 number, since 2×20304155554² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 267159904 + ... + 267159979.

It is an arithmetic number, because the mean of its divisors is an integer number (4007399130).

Almost surely, 2^20304155554 is an apocalyptic number.

20304155554 is a deficient number, since it is larger than the sum of its proper divisors (11755037486).

20304155554 is a wasteful number, since it uses less digits than its factorization.

20304155554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534319904.

The product of its (nonzero) digits is 60000, while the sum is 34.

Adding to 20304155554 its reverse (45555140302), we get a palindrome (65859295856).

The spelling of 20304155554 in words is "twenty billion, three hundred four million, one hundred fifty-five thousand, five hundred fifty-four".