55097795885 has 24 divisors (see below), whose sum is σ = 73162315800. Its totient is φ = 39802125440.

The previous prime is 55097795869. The next prime is 55097795899. The reversal of 55097795885 is 58859779055.

It can be written as a sum of positive squares in 4 ways, for example, as 8267537476 + 46830258409 = 90926^2 + 216403^2 .

It is not a de Polignac number, because 55097795885 - 2⁴ = 55097795869 is a prime.

It is a super-2 number, since 2×55097795885² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215462 + ... + 395751.

It is an arithmetic number, because the mean of its divisors is an integer number (3048429825).

Almost surely, 2^55097795885 is an apocalyptic number.

55097795885 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55097795885 is a deficient number, since it is larger than the sum of its proper divisors (18064519915).

55097795885 is a wasteful number, since it uses less digits than its factorization.

55097795885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611389 (or 611378 counting only the distinct ones).

The product of its (nonzero) digits is 158760000, while the sum is 68.

The spelling of 55097795885 in words is "fifty-five billion, ninety-seven million, seven hundred ninety-five thousand, eight hundred eighty-five".