2606122165551 has 8 divisors (see below), whose sum is σ = 3478903214640. Its totient is φ = 1735377946752.

The previous prime is 2606122165531. The next prime is 2606122165567. The reversal of 2606122165551 is 1555612216062.

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

It is not a de Polignac number, because 2606122165551 - 2¹⁴ = 2606122149167 is a prime.

It is a super-2 number, since 2×2606122165551² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2606122165531) 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, 509204586 + ... + 509209703.

It is an arithmetic number, because the mean of its divisors is an integer number (434862901830).

Almost surely, 2^{2606122165551} is an apocalyptic number.

2606122165551 is a deficient number, since it is larger than the sum of its proper divisors (872781049089).

2606122165551 is a wasteful number, since it uses less digits than its factorization.

2606122165551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018415145.

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 2606122165551 in words is "two trillion, six hundred six billion, one hundred twenty-two million, one hundred sixty-five thousand, five hundred fifty-one".