20000842436 has 6 divisors (see below), whose sum is σ = 35001474270. Its totient is φ = 10000421216.

The previous prime is 20000842429. The next prime is 20000842441. The reversal of 20000842436 is 63424800002.

It can be written as a sum of positive squares in only one way, i.e., 19392233536 + 608608900 = 139256^2 + 24670^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20000842399 and 20000842408.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500105301 + ... + 2500105308.

It is an arithmetic number, because the mean of its divisors is an integer number (5833579045).

Almost surely, 2^20000842436 is an apocalyptic number.

It is an amenable number.

20000842436 is a deficient number, since it is larger than the sum of its proper divisors (15000631834).

20000842436 is a wasteful number, since it uses less digits than its factorization.

20000842436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000210613 (or 5000210611 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The spelling of 20000842436 in words is "twenty billion, eight hundred forty-two thousand, four hundred thirty-six".