55621488412655 has 32 divisors (see below), whose sum is σ = 73004454619200. Its totient is φ = 40345963340800.

The previous prime is 55621488412619. The next prime is 55621488412733.

55621488412655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55621488412655 - 2¹⁶ = 55621488347119 is a prime.

It is a super-2 number, since 2×55621488412655² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 519438461 + ... + 519545529.

It is an arithmetic number, because the mean of its divisors is an integer number (2281389206850).

Almost surely, 2^{55621488412655} is an apocalyptic number.

55621488412655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55621488412655 is a deficient number, since it is larger than the sum of its proper divisors (17382966206545).

55621488412655 is a wasteful number, since it uses less digits than its factorization.

55621488412655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131755.

The product of its digits is 92160000, while the sum is 62.

The spelling of 55621488412655 in words is "fifty-five trillion, six hundred twenty-one billion, four hundred eighty-eight million, four hundred twelve thousand, six hundred fifty-five".