16617206324661 has 8 divisors (see below), whose sum is σ = 23119591408320. Its totient is φ = 10596479395392.

The previous prime is 16617206324633. The next prime is 16617206324671. The reversal of 16617206324661 is 16642360271661.

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

It is not a de Polignac number, because 16617206324661 - 2⁵ = 16617206324629 is a prime.

It is a super-2 number, since 2×16617206324661² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16617206324611) 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, 120414538516 + ... + 120414538653.

It is an arithmetic number, because the mean of its divisors is an integer number (2889948926040).

Almost surely, 2^{16617206324661} is an apocalyptic number.

It is an amenable number.

16617206324661 is a deficient number, since it is larger than the sum of its proper divisors (6502385083659).

16617206324661 is a wasteful number, since it uses less digits than its factorization.

16617206324661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240829077195.

The product of its (nonzero) digits is 2612736, while the sum is 51.

The spelling of 16617206324661 in words is "sixteen trillion, six hundred seventeen billion, two hundred six million, three hundred twenty-four thousand, six hundred sixty-one".