55435233045621 has 128 divisors (see below), whose sum is σ = 88776935815680. Its totient is φ = 30328233984000.

The previous prime is 55435233045593. The next prime is 55435233045677. The reversal of 55435233045621 is 12654033253455.

It is not a de Polignac number, because 55435233045621 - 2¹¹ = 55435233043573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55435233041621) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2139269761 + ... + 2139295673.

It is an arithmetic number, because the mean of its divisors is an integer number (693569811060).

Almost surely, 2^{55435233045621} is an apocalyptic number.

It is an amenable number.

55435233045621 is a deficient number, since it is larger than the sum of its proper divisors (33341702770059).

55435233045621 is a wasteful number, since it uses less digits than its factorization.

55435233045621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26647.

The product of its (nonzero) digits is 6480000, while the sum is 48.

The spelling of 55435233045621 in words is "fifty-five trillion, four hundred thirty-five billion, two hundred thirty-three million, forty-five thousand, six hundred twenty-one".