917321138463 has 16 divisors (see below), whose sum is σ = 1226415344000. Its totient is φ = 609887426400.

The previous prime is 917321138429. The next prime is 917321138501. The reversal of 917321138463 is 364831123719.

It is a happy number.

917321138463 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 917321138463 - 2²⁴ = 917304361247 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 (917321137463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21639813 + ... + 21682161.

It is an arithmetic number, because the mean of its divisors is an integer number (76650959000).

Almost surely, 2^917321138463 is an apocalyptic number.

917321138463 is a deficient number, since it is larger than the sum of its proper divisors (309094205537).

917321138463 is a wasteful number, since it uses less digits than its factorization.

917321138463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61782.

The product of its digits is 653184, while the sum is 48.

The spelling of 917321138463 in words is "nine hundred seventeen billion, three hundred twenty-one million, one hundred thirty-eight thousand, four hundred sixty-three".