20000002642 has 16 divisors (see below), whose sum is σ = 31611666240. Its totient is φ = 9463871088.

The previous prime is 20000002591. The next prime is 20000002643. The reversal of 20000002642 is 24620000002.

It is not an unprimeable number, because it can be changed into a prime (20000002643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235393 + ... + 308884.

It is an arithmetic number, because the mean of its divisors is an integer number (1975729140).

Almost surely, 2^20000002642 is an apocalyptic number.

20000002642 is a deficient number, since it is larger than the sum of its proper divisors (11611663598).

20000002642 is a wasteful number, since it uses less digits than its factorization.

20000002642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545265.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20000002642 its reverse (24620000002), we get a palindrome (44620002644).

The spelling of 20000002642 in words is "twenty billion, two thousand, six hundred forty-two".