21259696150 has 144 divisors (see below), whose sum is σ = 51801541632. Its totient is φ = 6412392000.

The previous prime is 21259696127. The next prime is 21259696153. The reversal of 21259696150 is 5169695212.

It is a self number, because there is not a number n which added to its sum of digits gives 21259696150.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21259696153) 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 71 ways as a sum of consecutive naturals, for example, 822727 + ... + 848173.

It is an arithmetic number, because the mean of its divisors is an integer number (359732928).

Almost surely, 2^21259696150 is an apocalyptic number.

21259696150 is an abundant number, since it is smaller than the sum of its proper divisors (30541845482).

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

21259696150 is a wasteful number, since it uses less digits than its factorization.

21259696150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25515 (or 25503 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 46.

It can be divided in two parts, 21259 and 696150, that added together give a square (717409 = 847²).

The spelling of 21259696150 in words is "twenty-one billion, two hundred fifty-nine million, six hundred ninety-six thousand, one hundred fifty".