53664820507 has 2 divisors, whose sum is σ = 53664820508. Its totient is φ = 53664820506.

The previous prime is 53664820493. The next prime is 53664820513. The reversal of 53664820507 is 70502846635.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53664820507 - 2¹⁵ = 53664787739 is a prime.

It is not a weakly prime, because it can be changed into another prime (53664820597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26832410253 + 26832410254.

It is an arithmetic number, because the mean of its divisors is an integer number (26832410254).

Almost surely, 2^53664820507 is an apocalyptic number.

53664820507 is a deficient number, since it is larger than the sum of its proper divisors (1).

53664820507 is an equidigital number, since it uses as much as digits as its factorization.

53664820507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 53664820507 in words is "fifty-three billion, six hundred sixty-four million, eight hundred twenty thousand, five hundred seven".