53205406155 has 48 divisors (see below), whose sum is σ = 102311838720. Its totient is φ = 25359316800.

The previous prime is 53205406129. The next prime is 53205406157. The reversal of 53205406155 is 55160450235.

53205406155 is a `hidden beast` number, since 5 + 3 + 2 + 0 + 540 + 61 + 55 = 666.

It is not a de Polignac number, because 53205406155 - 2¹⁸ = 53205144011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53205406157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 881691 + ... + 940100.

It is an arithmetic number, because the mean of its divisors is an integer number (2131496640).

Almost surely, 2^53205406155 is an apocalyptic number.

53205406155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

53205406155 is a deficient number, since it is larger than the sum of its proper divisors (49106432565).

53205406155 is a wasteful number, since it uses less digits than its factorization.

53205406155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821872 (or 1821869 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 53205406155 in words is "fifty-three billion, two hundred five million, four hundred six thousand, one hundred fifty-five".