31654451680648 has 16 divisors (see below), whose sum is σ = 59352156581580. Its totient is φ = 15827209925568.

The previous prime is 31654451680459. The next prime is 31654451680661. The reversal of 31654451680648 is 84608615445613.

It can be written as a sum of positive squares in 2 ways, for example, as 30709352726404 + 945098954244 = 5541602^2 + 972162^2 .

It is a super-2 number, since 2×31654451680648² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14697286 + ... + 16712842.

Almost surely, 2^{31654451680648} is an apocalyptic number.

It is an amenable number.

31654451680648 is a deficient number, since it is larger than the sum of its proper divisors (27697704900932).

31654451680648 is a wasteful number, since it uses less digits than its factorization.

31654451680648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3978696 (or 3978692 counting only the distinct ones).

The product of its (nonzero) digits is 66355200, while the sum is 61.

The spelling of 31654451680648 in words is "thirty-one trillion, six hundred fifty-four billion, four hundred fifty-one million, six hundred eighty thousand, six hundred forty-eight".