505544120405 has 8 divisors (see below), whose sum is σ = 606683520000. Its totient is φ = 404414912656.

The previous prime is 505544120371. The next prime is 505544120447. The reversal of 505544120405 is 504021445505.

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

It is a cyclic number.

It is not a de Polignac number, because 505544120405 - 2³⁶ = 436824643669 is a prime.

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, 2438405 + ... + 2637594.

It is an arithmetic number, because the mean of its divisors is an integer number (75835440000).

Almost surely, 2^505544120405 is an apocalyptic number.

It is an amenable number.

505544120405 is a deficient number, since it is larger than the sum of its proper divisors (101139399595).

505544120405 is a wasteful number, since it uses less digits than its factorization.

505544120405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5095923.

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 505544120405 in words is "five hundred five billion, five hundred forty-four million, one hundred twenty thousand, four hundred five".