55440646145511 has 32 divisors (see below), whose sum is σ = 80821626040320. Its totient is φ = 33525117410400.

The previous prime is 55440646145501. The next prime is 55440646145579. The reversal of 55440646145511 is 11554164604455.

It is a happy number.

It is not a de Polignac number, because 55440646145511 - 2¹⁰ = 55440646144487 is a prime.

It is a super-2 number, since 2×55440646145511² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55440646145501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198166356 + ... + 198445926.

It is an arithmetic number, because the mean of its divisors is an integer number (2525675813760).

Almost surely, 2^{55440646145511} is an apocalyptic number.

55440646145511 is a deficient number, since it is larger than the sum of its proper divisors (25380979894809).

55440646145511 is a wasteful number, since it uses less digits than its factorization.

55440646145511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293027.

The product of its (nonzero) digits is 5760000, while the sum is 51.

The spelling of 55440646145511 in words is "fifty-five trillion, four hundred forty billion, six hundred forty-six million, one hundred forty-five thousand, five hundred eleven".