55420313663 has 8 divisors (see below), whose sum is σ = 65109179856. Its totient is φ = 46506556800.

The previous prime is 55420313659. The next prime is 55420313693. The reversal of 55420313663 is 36631302455.

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

It is not a de Polignac number, because 55420313663 - 2² = 55420313659 is a prime.

It is a super-2 number, since 2×55420313663² (a number of 22 digits) contains 22 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 (55420313693) 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, 193777178 + ... + 193777463.

It is an arithmetic number, because the mean of its divisors is an integer number (8138647482).

Almost surely, 2^55420313663 is an apocalyptic number.

55420313663 is a deficient number, since it is larger than the sum of its proper divisors (9688866193).

55420313663 is a wasteful number, since it uses less digits than its factorization.

55420313663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387554665.

The product of its (nonzero) digits is 194400, while the sum is 38.

The spelling of 55420313663 in words is "fifty-five billion, four hundred twenty million, three hundred thirteen thousand, six hundred sixty-three".