54166607617 has 2 divisors, whose sum is σ = 54166607618. Its totient is φ = 54166607616.

The previous prime is 54166607609. The next prime is 54166607623. The reversal of 54166607617 is 71670666145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53379019521 + 787588096 = 231039^2 + 28064^2 .

It is a cyclic number.

It is not a de Polignac number, because 54166607617 - 2³ = 54166607609 is a prime.

It is not a weakly prime, because it can be changed into another prime (54166607647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27083303808 + 27083303809.

It is an arithmetic number, because the mean of its divisors is an integer number (27083303809).

Almost surely, 2^54166607617 is an apocalyptic number.

It is an amenable number.

54166607617 is a deficient number, since it is larger than the sum of its proper divisors (1).

54166607617 is an equidigital number, since it uses as much as digits as its factorization.

54166607617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 54166607617 in words is "fifty-four billion, one hundred sixty-six million, six hundred seven thousand, six hundred seventeen".