53355291840 has 112 divisors (see below), whose sum is σ = 188225643360. Its totient is φ = 14228075520.

The previous prime is 53355291827. The next prime is 53355291841. The reversal of 53355291840 is 4819255335.

53355291840 is a `hidden beast` number, since 5 + 3 + 3 + 552 + 91 + 8 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (53355291841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3079051 + ... + 3096330.

Almost surely, 2^53355291840 is an apocalyptic number.

It is an amenable number.

53355291840 is an abundant number, since it is smaller than the sum of its proper divisors (134870351520).

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

53355291840 is a wasteful number, since it uses less digits than its factorization.

53355291840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6175407 (or 6175391 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 53355291840 in words is "fifty-three billion, three hundred fifty-five million, two hundred ninety-one thousand, eight hundred forty".