21700208540162 has 8 divisors (see below), whose sum is σ = 33600322900992. Its totient is φ = 10500100906500.

The previous prime is 21700208540089. The next prime is 21700208540167. The reversal of 21700208540162 is 26104580200712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21700208540167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175001681714 + ... + 175001681837.

It is an arithmetic number, because the mean of its divisors is an integer number (4200040362624).

Almost surely, 2^{21700208540162} is an apocalyptic number.

21700208540162 is a deficient number, since it is larger than the sum of its proper divisors (11900114360830).

21700208540162 is a wasteful number, since it uses less digits than its factorization.

21700208540162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350003363584.

The product of its (nonzero) digits is 53760, while the sum is 38.

Adding to 21700208540162 its reverse (26104580200712), we get a palindrome (47804788740874).

The spelling of 21700208540162 in words is "twenty-one trillion, seven hundred billion, two hundred eight million, five hundred forty thousand, one hundred sixty-two".