361521656455 has 4 divisors (see below), whose sum is σ = 433825987752. Its totient is φ = 289217325160.

The previous prime is 361521656449. The next prime is 361521656467. The reversal of 361521656455 is 554656125163.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 554656125163 = 7 ⋅79236589309.

It is not a de Polignac number, because 361521656455 - 2¹⁷ = 361521525383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 361521656399 and 361521656408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36152165641 + ... + 36152165650.

It is an arithmetic number, because the mean of its divisors is an integer number (108456496938).

Almost surely, 2^361521656455 is an apocalyptic number.

361521656455 is a deficient number, since it is larger than the sum of its proper divisors (72304331297).

361521656455 is an equidigital number, since it uses as much as digits as its factorization.

361521656455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72304331296.

The product of its digits is 3240000, while the sum is 49.

The spelling of 361521656455 in words is "three hundred sixty-one billion, five hundred twenty-one million, six hundred fifty-six thousand, four hundred fifty-five".