55500055550505 has 48 divisors (see below), whose sum is σ = 98806761140880. Its totient is φ = 28798086795264.

The previous prime is 55500055550461. The next prime is 55500055550519. The reversal of 55500055550505 is 50505555000555.

It can be written as a sum of positive squares in 8 ways, for example, as 12290717779344 + 43209337771161 = 3505812^2 + 6573381^2 .

It is not a de Polignac number, because 55500055550505 - 2¹³ = 55500055542313 is a prime.

It is a super-2 number, since 2×55500055550505² (a number of 28 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23740389 + ... + 25973181.

It is an arithmetic number, because the mean of its divisors is an integer number (2058474190435).

Almost surely, 2^{55500055550505} is an apocalyptic number.

It is an amenable number.

55500055550505 is a deficient number, since it is larger than the sum of its proper divisors (43306705590375).

55500055550505 is a wasteful number, since it uses less digits than its factorization.

55500055550505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247770 (or 2247767 counting only the distinct ones).

The product of its (nonzero) digits is 1953125, while the sum is 45.

The spelling of 55500055550505 in words is "fifty-five trillion, five hundred billion, fifty-five million, five hundred fifty thousand, five hundred five".