21534662302 has 16 divisors (see below), whose sum is σ = 32752814400. Its totient is φ = 10617132672.

The previous prime is 21534662291. The next prime is 21534662309. The reversal of 21534662302 is 20326643512.

It is a super-2 number, since 2×21534662302² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21534662309) 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, 635074 + ... + 668122.

It is an arithmetic number, because the mean of its divisors is an integer number (2047050900).

Almost surely, 2^21534662302 is an apocalyptic number.

21534662302 is a deficient number, since it is larger than the sum of its proper divisors (11218152098).

21534662302 is a wasteful number, since it uses less digits than its factorization.

21534662302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37587.

The product of its (nonzero) digits is 51840, while the sum is 34.

The spelling of 21534662302 in words is "twenty-one billion, five hundred thirty-four million, six hundred sixty-two thousand, three hundred two".