20299623288 has 32 divisors (see below), whose sum is σ = 57998924160. Its totient is φ = 5799892320.

The previous prime is 20299623271. The next prime is 20299623293. The reversal of 20299623288 is 88232699202.

It is a self number, because there is not a number n which added to its sum of digits gives 20299623288.

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, 60415378 + ... + 60415713.

It is an arithmetic number, because the mean of its divisors is an integer number (1812466380).

Almost surely, 2^20299623288 is an apocalyptic number.

20299623288 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20299623288 is an abundant number, since it is smaller than the sum of its proper divisors (37699300872).

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

20299623288 is a wasteful number, since it uses less digits than its factorization.

20299623288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120831107 (or 120831103 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 20299623288 in words is "twenty billion, two hundred ninety-nine million, six hundred twenty-three thousand, two hundred eighty-eight".