53857453857 has 32 divisors (see below), whose sum is σ = 78128209152. Its totient is φ = 32863094784.

The previous prime is 53857453841. The next prime is 53857453873. The reversal of 53857453857 is 75835475835.

It is an interprime number because it is at equal distance from previous prime (53857453841) and next prime (53857453873).

It is not a de Polignac number, because 53857453857 - 2⁴ = 53857453841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53857453857.

It is not an unprimeable number, because it can be changed into a prime (53857453057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4509628 + ... + 4521554.

It is an arithmetic number, because the mean of its divisors is an integer number (2441506536).

Almost surely, 2^53857453857 is an apocalyptic number.

It is an amenable number.

53857453857 is a deficient number, since it is larger than the sum of its proper divisors (24270755295).

53857453857 is a wasteful number, since it uses less digits than its factorization.

53857453857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14377.

The product of its digits is 70560000, while the sum is 60.

The spelling of 53857453857 in words is "fifty-three billion, eight hundred fifty-seven million, four hundred fifty-three thousand, eight hundred fifty-seven".