55000021446123 has 32 divisors (see below), whose sum is σ = 79051260724800. Its totient is φ = 33813237528576.

The previous prime is 55000021446121. The next prime is 55000021446221. The reversal of 55000021446123 is 32164412000055.

It is not a de Polignac number, because 55000021446123 - 2¹ = 55000021446121 is a prime.

It is a super-2 number, since 2×55000021446123² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55000021446121) 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, 176200233 + ... + 176512101.

It is an arithmetic number, because the mean of its divisors is an integer number (2470351897650).

Almost surely, 2^{55000021446123} is an apocalyptic number.

55000021446123 is a deficient number, since it is larger than the sum of its proper divisors (24051239278677).

55000021446123 is a wasteful number, since it uses less digits than its factorization.

55000021446123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316271.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 55000021446123 its reverse (32164412000055), we get a palindrome (87164433446178).

The spelling of 55000021446123 in words is "fifty-five trillion, twenty-one million, four hundred forty-six thousand, one hundred twenty-three".