55405366350455 has 8 divisors (see below), whose sum is σ = 72530661404304. Its totient is φ = 40294811891200.

The previous prime is 55405366350361. The next prime is 55405366350511.

55405366350455 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 55405366350455 - 2⁸ = 55405366350199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55405366350455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503685148586 + ... + 503685148695.

It is an arithmetic number, because the mean of its divisors is an integer number (9066332675538).

Almost surely, 2^{55405366350455} is an apocalyptic number.

55405366350455 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55405366350455 is a deficient number, since it is larger than the sum of its proper divisors (17125295053849).

55405366350455 is a wasteful number, since it uses less digits than its factorization.

55405366350455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007370297297.

The product of its (nonzero) digits is 81000000, while the sum is 56.

The spelling of 55405366350455 in words is "fifty-five trillion, four hundred five billion, three hundred sixty-six million, three hundred fifty thousand, four hundred fifty-five".