55156400671321 has 8 divisors (see below), whose sum is σ = 55224834618464. Its totient is φ = 55087967769120.

The previous prime is 55156400671291. The next prime is 55156400671387. The reversal of 55156400671321 is 12317600465155.

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 55156400671321 - 2⁵ = 55156400671289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55156400611321) 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, 207602461 + ... + 207867973.

It is an arithmetic number, because the mean of its divisors is an integer number (6903104327308).

Almost surely, 2^{55156400671321} is an apocalyptic number.

It is an amenable number.

55156400671321 is a deficient number, since it is larger than the sum of its proper divisors (68433947143).

55156400671321 is a wasteful number, since it uses less digits than its factorization.

55156400671321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522471.

The product of its (nonzero) digits is 756000, while the sum is 46.

The spelling of 55156400671321 in words is "fifty-five trillion, one hundred fifty-six billion, four hundred million, six hundred seventy-one thousand, three hundred twenty-one".