5566121554465 has 32 divisors (see below), whose sum is σ = 6861434126976. Its totient is φ = 4332929402880.

The previous prime is 5566121554451. The next prime is 5566121554481. The reversal of 5566121554465 is 5644551216655.

It is not a de Polignac number, because 5566121554465 - 2¹³ = 5566121546273 is a prime.

It is a super-2 number, since 2×5566121554465² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58864114 + ... + 58958596.

It is an arithmetic number, because the mean of its divisors is an integer number (214419816468).

Almost surely, 2^{5566121554465} is an apocalyptic number.

It is an amenable number.

5566121554465 is a deficient number, since it is larger than the sum of its proper divisors (1295312572511).

5566121554465 is a wasteful number, since it uses less digits than its factorization.

5566121554465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96369.

The product of its digits is 21600000, while the sum is 55.

The spelling of 5566121554465 in words is "five trillion, five hundred sixty-six billion, one hundred twenty-one million, five hundred fifty-four thousand, four hundred sixty-five".