355240421055 has 24 divisors (see below), whose sum is σ = 663115453728. Its totient is φ = 174887591616.

The previous prime is 355240421047. The next prime is 355240421071. The reversal of 355240421055 is 550124042553.

355240421055 is a `hidden beast` number, since 3 + 552 + 4 + 0 + 42 + 10 + 55 = 666.

It is not a de Polignac number, because 355240421055 - 2³ = 355240421047 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 303623707 + ... + 303624876.

It is an arithmetic number, because the mean of its divisors is an integer number (27629810572).

Almost surely, 2^355240421055 is an apocalyptic number.

355240421055 is a deficient number, since it is larger than the sum of its proper divisors (307875032673).

355240421055 is a wasteful number, since it uses less digits than its factorization.

355240421055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607248607 (or 607248604 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 355240421055 in words is "three hundred fifty-five billion, two hundred forty million, four hundred twenty-one thousand, fifty-five".