20067320534 has 4 divisors (see below), whose sum is σ = 30100980804. Its totient is φ = 10033660266.

The previous prime is 20067320519. The next prime is 20067320561. The reversal of 20067320534 is 43502376002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43502376002 = 2 ⋅21751188001.

It is a self number, because there is not a number n which added to its sum of digits gives 20067320534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5016830132 + ... + 5016830135.

It is an arithmetic number, because the mean of its divisors is an integer number (7525245201).

Almost surely, 2^20067320534 is an apocalyptic number.

20067320534 is a deficient number, since it is larger than the sum of its proper divisors (10033660270).

20067320534 is a wasteful number, since it uses less digits than its factorization.

20067320534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10033660269.

The product of its (nonzero) digits is 30240, while the sum is 32.

Adding to 20067320534 its reverse (43502376002), we get a palindrome (63569696536).

The spelling of 20067320534 in words is "twenty billion, sixty-seven million, three hundred twenty thousand, five hundred thirty-four".