53478640858 has 8 divisors (see below), whose sum is σ = 80243673300. Its totient is φ = 26730749760.

The previous prime is 53478640801. The next prime is 53478640861. The reversal of 53478640858 is 85804687435.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 44349411649 + 9129229209 = 210593^2 + 95547^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 4277533 + ... + 4290016.

Almost surely, 2^53478640858 is an apocalyptic number.

53478640858 is a deficient number, since it is larger than the sum of its proper divisors (26765032442).

53478640858 is a wasteful number, since it uses less digits than its factorization.

53478640858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8570672.

The product of its (nonzero) digits is 25804800, while the sum is 58.

The spelling of 53478640858 in words is "fifty-three billion, four hundred seventy-eight million, six hundred forty thousand, eight hundred fifty-eight".