59520643781 has 2 divisors, whose sum is σ = 59520643782. Its totient is φ = 59520643780.

The previous prime is 59520643757. The next prime is 59520643783. The reversal of 59520643781 is 18734602595.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59372632225 + 148011556 = 243665^2 + 12166^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-59520643781 is a prime.

It is a super-2 number, since 2×59520643781² (a number of 22 digits) contains 22 as substring.

Together with 59520643783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (59520643783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29760321890 + 29760321891.

It is an arithmetic number, because the mean of its divisors is an integer number (29760321891).

It is a 1-persistent number, because it is pandigital, but 2⋅59520643781 = 119041287562 is not.

Almost surely, 2^59520643781 is an apocalyptic number.

It is an amenable number.

59520643781 is a deficient number, since it is larger than the sum of its proper divisors (1).

59520643781 is an equidigital number, since it uses as much as digits as its factorization.

59520643781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 59520643781 in words is "fifty-nine billion, five hundred twenty million, six hundred forty-three thousand, seven hundred eighty-one".