20003020554 has 32 divisors (see below), whose sum is σ = 44571534336. Its totient is φ = 5932551920.

The previous prime is 20003020517. The next prime is 20003020567. The reversal of 20003020554 is 45502030002.

It is a self number, because there is not a number n which added to its sum of digits gives 20003020554.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3221112 + ... + 3227315.

It is an arithmetic number, because the mean of its divisors is an integer number (1392860448).

Almost surely, 2^20003020554 is an apocalyptic number.

20003020554 is an abundant number, since it is smaller than the sum of its proper divisors (24568513782).

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

20003020554 is a wasteful number, since it uses less digits than its factorization.

20003020554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6448490.

The product of its (nonzero) digits is 1200, while the sum is 21.

Adding to 20003020554 its reverse (45502030002), we get a palindrome (65505050556).

The spelling of 20003020554 in words is "twenty billion, three million, twenty thousand, five hundred fifty-four".