21607061070617 has 8 divisors (see below), whose sum is σ = 23571445740192. Its totient is φ = 19642694132800.

The previous prime is 21607061070601. The next prime is 21607061070641. The reversal of 21607061070617 is 71607016070612.

It is a happy number.

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 21607061070617 - 2⁴ = 21607061070601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21607061070667) 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, 1817984 + ... + 6820497.

It is an arithmetic number, because the mean of its divisors is an integer number (2946430717524).

Almost surely, 2^{21607061070617} is an apocalyptic number.

It is an amenable number.

21607061070617 is a deficient number, since it is larger than the sum of its proper divisors (1964384669575).

21607061070617 is a wasteful number, since it uses less digits than its factorization.

21607061070617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8865879.

The product of its (nonzero) digits is 148176, while the sum is 44.

It can be divided in two parts, 2160706 and 1070617, that added together give a palindrome (3231323).

The spelling of 21607061070617 in words is "twenty-one trillion, six hundred seven billion, sixty-one million, seventy thousand, six hundred seventeen".