53720053511 has 2 divisors, whose sum is σ = 53720053512. Its totient is φ = 53720053510.

The previous prime is 53720053411. The next prime is 53720053537. The reversal of 53720053511 is 11535002735.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53720053511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53720053591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26860026755 + 26860026756.

It is an arithmetic number, because the mean of its divisors is an integer number (26860026756).

Almost surely, 2^53720053511 is an apocalyptic number.

53720053511 is a deficient number, since it is larger than the sum of its proper divisors (1).

53720053511 is an equidigital number, since it uses as much as digits as its factorization.

53720053511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15750, while the sum is 32.

The spelling of 53720053511 in words is "fifty-three billion, seven hundred twenty million, fifty-three thousand, five hundred eleven".