55956843197 has 4 divisors (see below), whose sum is σ = 55995730560. Its totient is φ = 55917955836.

The previous prime is 55956843179. The next prime is 55956843203. The reversal of 55956843197 is 79134865955.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55956843197 - 2¹⁴ = 55956826813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55956843797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19441523 + ... + 19444400.

It is an arithmetic number, because the mean of its divisors is an integer number (13998932640).

Almost surely, 2^55956843197 is an apocalyptic number.

It is an amenable number.

55956843197 is a deficient number, since it is larger than the sum of its proper divisors (38887363).

55956843197 is a wasteful number, since it uses less digits than its factorization.

55956843197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38887362.

The product of its digits is 40824000, while the sum is 62.

The spelling of 55956843197 in words is "fifty-five billion, nine hundred fifty-six million, eight hundred forty-three thousand, one hundred ninety-seven".