31758618468 has 12 divisors (see below), whose sum is σ = 74103443120. Its totient is φ = 10586206152.

The previous prime is 31758618461. The next prime is 31758618497. The reversal of 31758618468 is 86481685713.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (31758618461) 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 3 ways as a sum of consecutive naturals, for example, 1323275758 + ... + 1323275781.

Almost surely, 2^31758618468 is an apocalyptic number.

It is an amenable number.

31758618468 is an abundant number, since it is smaller than the sum of its proper divisors (42344824652).

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

31758618468 is a wasteful number, since it uses less digits than its factorization.

31758618468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646551546 (or 2646551544 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 57.

The spelling of 31758618468 in words is "thirty-one billion, seven hundred fifty-eight million, six hundred eighteen thousand, four hundred sixty-eight".