361421506503 has 6 divisors (see below), whose sum is σ = 522053287184. Its totient is φ = 240947670996.

The previous prime is 361421506499. The next prime is 361421506519. The reversal of 361421506503 is 305605124163.

361421506503 is a `hidden beast` number, since 3 + 6 + 142 + 1 + 5 + 0 + 6 + 503 = 666.

It is not a de Polignac number, because 361421506503 - 2² = 361421506499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361421506703) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 20078972575 + ... + 20078972592.

Almost surely, 2^361421506503 is an apocalyptic number.

361421506503 is a deficient number, since it is larger than the sum of its proper divisors (160631780681).

361421506503 is a wasteful number, since it uses less digits than its factorization.

361421506503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40157945173 (or 40157945170 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 361421506503 in words is "three hundred sixty-one billion, four hundred twenty-one million, five hundred six thousand, five hundred three".