20001355534 has 8 divisors (see below), whose sum is σ = 30510542520. Its totient is φ = 9831174696.

The previous prime is 20001355513. The next prime is 20001355547. The reversal of 20001355534 is 43555310002.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84751389 + ... + 84751624.

It is an arithmetic number, because the mean of its divisors is an integer number (3813817815).

Almost surely, 2^20001355534 is an apocalyptic number.

20001355534 is a deficient number, since it is larger than the sum of its proper divisors (10509186986).

20001355534 is a wasteful number, since it uses less digits than its factorization.

20001355534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169503074.

The product of its (nonzero) digits is 9000, while the sum is 28.

Adding to 20001355534 its reverse (43555310002), we get a palindrome (63556665536).

The spelling of 20001355534 in words is "twenty billion, one million, three hundred fifty-five thousand, five hundred thirty-four".