361287317438 has 4 divisors (see below), whose sum is σ = 541930976160. Its totient is φ = 180643658718.

The previous prime is 361287317437. The next prime is 361287317491. The reversal of 361287317438 is 834713782163.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 834713782163 = 109 ⋅7657924607.

It is a self number, because there is not a number n which added to its sum of digits gives 361287317438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361287317437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90321829358 + ... + 90321829361.

It is an arithmetic number, because the mean of its divisors is an integer number (135482744040).

Almost surely, 2^361287317438 is an apocalyptic number.

361287317438 is a deficient number, since it is larger than the sum of its proper divisors (180643658722).

361287317438 is a wasteful number, since it uses less digits than its factorization.

361287317438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180643658721.

The product of its digits is 4064256, while the sum is 53.

The spelling of 361287317438 in words is "three hundred sixty-one billion, two hundred eighty-seven million, three hundred seventeen thousand, four hundred thirty-eight".