917987544954 has 32 divisors (see below), whose sum is σ = 2043003565440. Its totient is φ = 305541161856.

The previous prime is 917987544953. The next prime is 917987544959. The reversal of 917987544954 is 459445789719.

917987544954 is a `hidden beast` number, since 9 + 1 + 7 + 9 + 87 + 54 + 495 + 4 = 666.

It is a super-2 number, since 2×917987544954² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (917987544953) by changing a digit.

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, 12593502 + ... + 12666185.

It is an arithmetic number, because the mean of its divisors is an integer number (63843861420).

Almost surely, 2^917987544954 is an apocalyptic number.

917987544954 is an abundant number, since it is smaller than the sum of its proper divisors (1125016020486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

917987544954 is a wasteful number, since it uses less digits than its factorization.

917987544954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25260371 (or 25260365 counting only the distinct ones).

The product of its digits is 457228800, while the sum is 72.

The spelling of 917987544954 in words is "nine hundred seventeen billion, nine hundred eighty-seven million, five hundred forty-four thousand, nine hundred fifty-four".