53516251561511 has 2 divisors, whose sum is σ = 53516251561512. Its totient is φ = 53516251561510.

The previous prime is 53516251561477. The next prime is 53516251561583. The reversal of 53516251561511 is 11516515261535.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53516251561511 - 2³⁴ = 53499071692327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53516251564511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26758125780755 + 26758125780756.

It is an arithmetic number, because the mean of its divisors is an integer number (26758125780756).

Almost surely, 2^{53516251561511} is an apocalyptic number.

53516251561511 is a deficient number, since it is larger than the sum of its proper divisors (1).

53516251561511 is an equidigital number, since it uses as much as digits as its factorization.

53516251561511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 675000, while the sum is 47.

The spelling of 53516251561511 in words is "fifty-three trillion, five hundred sixteen billion, two hundred fifty-one million, five hundred sixty-one thousand, five hundred eleven".