55677415441421 has 4 divisors (see below), whose sum is σ = 55678618777344. Its totient is φ = 55676212105500.

The previous prime is 55677415441279. The next prime is 55677415441441. The reversal of 55677415441421 is 12414451477655.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55677415441421 - 2¹⁰ = 55677415440397 is a prime.

It is a super-3 number, since 3×55677415441421³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55677415441441) 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 3 ways as a sum of consecutive naturals, for example, 601598555 + ... + 601691096.

It is an arithmetic number, because the mean of its divisors is an integer number (13919654694336).

Almost surely, 2^{55677415441421} is an apocalyptic number.

It is an amenable number.

55677415441421 is a deficient number, since it is larger than the sum of its proper divisors (1203335923).

55677415441421 is a wasteful number, since it uses less digits than its factorization.

55677415441421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203335922.

The product of its digits is 18816000, while the sum is 56.

The spelling of 55677415441421 in words is "fifty-five trillion, six hundred seventy-seven billion, four hundred fifteen million, four hundred forty-one thousand, four hundred twenty-one".