984172555957 has 2 divisors, whose sum is σ = 984172555958. Its totient is φ = 984172555956.

The previous prime is 984172555943. The next prime is 984172555973. The reversal of 984172555957 is 759555271489.

984172555957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 887601399876 + 96571156081 = 942126^2 + 310759^2 .

It is a cyclic number.

It is not a de Polignac number, because 984172555957 - 2²⁷ = 984038338229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 984172555892 and 984172555901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (984172555907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492086277978 + 492086277979.

It is an arithmetic number, because the mean of its divisors is an integer number (492086277979).

Almost surely, 2^984172555957 is an apocalyptic number.

It is an amenable number.

984172555957 is a deficient number, since it is larger than the sum of its proper divisors (1).

984172555957 is an equidigital number, since it uses as much as digits as its factorization.

984172555957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760000, while the sum is 67.

The spelling of 984172555957 in words is "nine hundred eighty-four billion, one hundred seventy-two million, five hundred fifty-five thousand, nine hundred fifty-seven".