55726128079 has 2 divisors, whose sum is σ = 55726128080. Its totient is φ = 55726128078.

The previous prime is 55726128037. The next prime is 55726128169. The reversal of 55726128079 is 97082162755.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55726128079 - 2¹⁷ = 55725997007 is a prime.

It is a super-2 number, since 2×55726128079² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55726128019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27863064039 + 27863064040.

It is an arithmetic number, because the mean of its divisors is an integer number (27863064040).

Almost surely, 2^55726128079 is an apocalyptic number.

55726128079 is a deficient number, since it is larger than the sum of its proper divisors (1).

55726128079 is an equidigital number, since it uses as much as digits as its factorization.

55726128079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2116800, while the sum is 52.

The spelling of 55726128079 in words is "fifty-five billion, seven hundred twenty-six million, one hundred twenty-eight thousand, seventy-nine".