53666370497 has 2 divisors, whose sum is σ = 53666370498. Its totient is φ = 53666370496.

The previous prime is 53666370493. The next prime is 53666370509. The reversal of 53666370497 is 79407366635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45433348801 + 8233021696 = 213151^2 + 90736^2 .

It is a cyclic number.

It is not a de Polignac number, because 53666370497 - 2² = 53666370493 is a prime.

It is not a weakly prime, because it can be changed into another prime (53666370493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26833185248 + 26833185249.

It is an arithmetic number, because the mean of its divisors is an integer number (26833185249).

Almost surely, 2^53666370497 is an apocalyptic number.

It is an amenable number.

53666370497 is a deficient number, since it is larger than the sum of its proper divisors (1).

53666370497 is an equidigital number, since it uses as much as digits as its factorization.

53666370497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17146080, while the sum is 56.

The spelling of 53666370497 in words is "fifty-three billion, six hundred sixty-six million, three hundred seventy thousand, four hundred ninety-seven".