20030513534 has 16 divisors (see below), whose sum is σ = 31820817600. Its totient is φ = 9423857664.

The previous prime is 20030513521. The next prime is 20030513543. The reversal of 20030513534 is 43531503002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77147 + ... + 214505.

It is an arithmetic number, because the mean of its divisors is an integer number (1988801100).

Almost surely, 2^20030513534 is an apocalyptic number.

20030513534 is a deficient number, since it is larger than the sum of its proper divisors (11790304066).

20030513534 is a wasteful number, since it uses less digits than its factorization.

20030513534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141667.

The product of its (nonzero) digits is 5400, while the sum is 26.

The spelling of 20030513534 in words is "twenty billion, thirty million, five hundred thirteen thousand, five hundred thirty-four".