20434002051 has 16 divisors (see below), whose sum is σ = 27473846400. Its totient is φ = 13508645568.

The previous prime is 20434002041. The next prime is 20434002073. The reversal of 20434002051 is 15020043402.

It is not a de Polignac number, because 20434002051 - 2⁵ = 20434002019 is a prime.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (20434002041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328780 + ... + 385958.

It is an arithmetic number, because the mean of its divisors is an integer number (1717115400).

Almost surely, 2^20434002051 is an apocalyptic number.

20434002051 is a deficient number, since it is larger than the sum of its proper divisors (7039844349).

20434002051 is a wasteful number, since it uses less digits than its factorization.

20434002051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58178.

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

Adding to 20434002051 its reverse (15020043402), we get a palindrome (35454045453).

The spelling of 20434002051 in words is "twenty billion, four hundred thirty-four million, two thousand, fifty-one".