21700733097 has 8 divisors (see below), whose sum is σ = 28985706144. Its totient is φ = 14441457728.

The previous prime is 21700733083. The next prime is 21700733107. The reversal of 21700733097 is 79033700712.

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

It is a cyclic number.

It is not a de Polignac number, because 21700733097 - 2¹⁶ = 21700667561 is a prime.

It is a super-2 number, since 2×21700733097² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21700733077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6422448 + ... + 6425825.

It is an arithmetic number, because the mean of its divisors is an integer number (3623213268).

Almost surely, 2^21700733097 is an apocalyptic number.

It is an amenable number.

21700733097 is a deficient number, since it is larger than the sum of its proper divisors (7284973047).

21700733097 is a wasteful number, since it uses less digits than its factorization.

21700733097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12848839.

The product of its (nonzero) digits is 55566, while the sum is 39.

The spelling of 21700733097 in words is "twenty-one billion, seven hundred million, seven hundred thirty-three thousand, ninety-seven".