53616039949 has 2 divisors, whose sum is σ = 53616039950. Its totient is φ = 53616039948.

The previous prime is 53616039943. The next prime is 53616039977. The reversal of 53616039949 is 94993061635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43725737449 + 9890302500 = 209107^2 + 99450^2 .

It is a cyclic number.

It is not a de Polignac number, because 53616039949 - 2¹⁷ = 53615908877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53616039949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53616039943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26808019974 + 26808019975.

It is an arithmetic number, because the mean of its divisors is an integer number (26808019975).

Almost surely, 2^53616039949 is an apocalyptic number.

It is an amenable number.

53616039949 is a deficient number, since it is larger than the sum of its proper divisors (1).

53616039949 is an equidigital number, since it uses as much as digits as its factorization.

53616039949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4723920, while the sum is 55.

The spelling of 53616039949 in words is "fifty-three billion, six hundred sixteen million, thirty-nine thousand, nine hundred forty-nine".