52154618807989 has 2 divisors, whose sum is σ = 52154618807990. Its totient is φ = 52154618807988.

The previous prime is 52154618807971. The next prime is 52154618808007. The reversal of 52154618807989 is 98970881645125.

It is a balanced prime because it is at equal distance from previous prime (52154618807971) and next prime (52154618808007).

It can be written as a sum of positive squares in only one way, i.e., 32411330679025 + 19743288128964 = 5693095^2 + 4443342^2 .

It is a cyclic number.

It is not a de Polignac number, because 52154618807989 - 2¹³ = 52154618799797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52154618817989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26077309403994 + 26077309403995.

It is an arithmetic number, because the mean of its divisors is an integer number (26077309403995).

Almost surely, 2^{52154618807989} is an apocalyptic number.

It is an amenable number.

52154618807989 is a deficient number, since it is larger than the sum of its proper divisors (1).

52154618807989 is an equidigital number, since it uses as much as digits as its factorization.

52154618807989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 348364800, while the sum is 73.

The spelling of 52154618807989 in words is "fifty-two trillion, one hundred fifty-four billion, six hundred eighteen million, eight hundred seven thousand, nine hundred eighty-nine".