355240421015 has 16 divisors (see below), whose sum is σ = 434200988160. Its totient is φ = 278932620960.

The previous prime is 355240420987. The next prime is 355240421047. The reversal of 355240421015 is 510124042553.

It is not a de Polignac number, because 355240421015 - 2¹² = 355240416919 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 768059 + ... + 1140348.

It is an arithmetic number, because the mean of its divisors is an integer number (27137561760).

Almost surely, 2^355240421015 is an apocalyptic number.

355240421015 is a deficient number, since it is larger than the sum of its proper divisors (78960567145).

355240421015 is a wasteful number, since it uses less digits than its factorization.

355240421015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909102.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 355240421015 its reverse (510124042553), we get a palindrome (865364463568).

The spelling of 355240421015 in words is "three hundred fifty-five billion, two hundred forty million, four hundred twenty-one thousand, fifteen".