55960428991 has 2 divisors, whose sum is σ = 55960428992. Its totient is φ = 55960428990.

The previous prime is 55960428989. The next prime is 55960429027. The reversal of 55960428991 is 19982406955.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55960428991 - 2¹ = 55960428989 is a prime.

It is a super-2 number, since 2×55960428991² (a number of 22 digits) contains 22 as substring.

Together with 55960428989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55960428971) by changing a digit.

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 as a sum of consecutive naturals, namely, 27980214495 + 27980214496.

It is an arithmetic number, because the mean of its divisors is an integer number (27980214496).

Almost surely, 2^55960428991 is an apocalyptic number.

55960428991 is a deficient number, since it is larger than the sum of its proper divisors (1).

55960428991 is an equidigital number, since it uses as much as digits as its factorization.

55960428991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6998400, while the sum is 58.

The spelling of 55960428991 in words is "fifty-five billion, nine hundred sixty million, four hundred twenty-eight thousand, nine hundred ninety-one".