55189728023 has 8 divisors (see below), whose sum is σ = 55971901440. Its totient is φ = 54407689560.

The previous prime is 55189727981. The next prime is 55189728031. The reversal of 55189728023 is 32082798155.

It is a happy number.

55189728023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 55189728023 - 2⁸ = 55189727767 is a prime.

It is a super-2 number, since 2×55189728023² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55189778023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1022138 + ... + 1074776.

It is an arithmetic number, because the mean of its divisors is an integer number (6996487680).

Almost surely, 2^55189728023 is an apocalyptic number.

55189728023 is a deficient number, since it is larger than the sum of its proper divisors (782173417).

55189728023 is a wasteful number, since it uses less digits than its factorization.

55189728023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67477.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 55189728023 in words is "fifty-five billion, one hundred eighty-nine million, seven hundred twenty-eight thousand, twenty-three".