420155543555 has 8 divisors (see below), whose sum is σ = 550021802544. Its totient is φ = 305567668000.

The previous prime is 420155543497. The next prime is 420155543557. The reversal of 420155543555 is 555345551024.

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

It is not a de Polignac number, because 420155543555 - 2¹² = 420155539459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420155543557) 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, 3819595796 + ... + 3819595905.

It is an arithmetic number, because the mean of its divisors is an integer number (68752725318).

Almost surely, 2^420155543555 is an apocalyptic number.

420155543555 is a deficient number, since it is larger than the sum of its proper divisors (129866258989).

420155543555 is a wasteful number, since it uses less digits than its factorization.

420155543555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7639191717.

The product of its (nonzero) digits is 1500000, while the sum is 44.

The spelling of 420155543555 in words is "four hundred twenty billion, one hundred fifty-five million, five hundred forty-three thousand, five hundred fifty-five".