505201420155 has 32 divisors (see below), whose sum is σ = 834451752960. Its totient is φ = 260732067840.

The previous prime is 505201420123. The next prime is 505201420201. The reversal of 505201420155 is 551024102505.

It is not a de Polignac number, because 505201420155 - 2⁵ = 505201420123 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10332556 + ... + 10381334.

It is an arithmetic number, because the mean of its divisors is an integer number (26076617280).

Almost surely, 2^505201420155 is an apocalyptic number.

505201420155 is a deficient number, since it is larger than the sum of its proper divisors (329250332805).

505201420155 is a wasteful number, since it uses less digits than its factorization.

505201420155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71091.

The product of its (nonzero) digits is 10000, while the sum is 30.

The spelling of 505201420155 in words is "five hundred five billion, two hundred one million, four hundred twenty thousand, one hundred fifty-five".