20434020015 has 8 divisors (see below), whose sum is σ = 32694432048. Its totient is φ = 10898144000.

The previous prime is 20434019993. The next prime is 20434020023. The reversal of 20434020015 is 51002043402.

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

It is not a de Polignac number, because 20434020015 - 2¹² = 20434015919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20434019973 and 20434020000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681133986 + ... + 681134015.

It is an arithmetic number, because the mean of its divisors is an integer number (4086804006).

Almost surely, 2^20434020015 is an apocalyptic number.

20434020015 is a deficient number, since it is larger than the sum of its proper divisors (12260412033).

20434020015 is a wasteful number, since it uses less digits than its factorization.

20434020015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362268009.

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 20434020015 its reverse (51002043402), we get a palindrome (71436063417).

The spelling of 20434020015 in words is "twenty billion, four hundred thirty-four million, twenty thousand, fifteen".