20288698536 has 32 divisors (see below), whose sum is σ = 50726917440. Its totient is φ = 6762210048.

The previous prime is 20288698489. The next prime is 20288698537. The reversal of 20288698536 is 63589688202.

It is not an unprimeable number, because it can be changed into a prime (20288698537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233440 + ... + 308336.

It is an arithmetic number, because the mean of its divisors is an integer number (1585216170).

Almost surely, 2^20288698536 is an apocalyptic number.

It is an amenable number.

20288698536 is an abundant number, since it is smaller than the sum of its proper divisors (30438218904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20288698536 is a wasteful number, since it uses less digits than its factorization.

20288698536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86193 (or 86189 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 57.

The spelling of 20288698536 in words is "twenty billion, two hundred eighty-eight million, six hundred ninety-eight thousand, five hundred thirty-six".