59881521619649 has 2 divisors, whose sum is σ = 59881521619650. Its totient is φ = 59881521619648.

The previous prime is 59881521619637. The next prime is 59881521619709. The reversal of 59881521619649 is 94691612518895.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38267437300624 + 21614084319025 = 6186068^2 + 4649095^2 .

It is a cyclic number.

It is not a de Polignac number, because 59881521619649 - 2²⁰ = 59881520571073 is a prime.

It is not a weakly prime, because it can be changed into another prime (59881521613649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29940760809824 + 29940760809825.

It is an arithmetic number, because the mean of its divisors is an integer number (29940760809825).

Almost surely, 2^{59881521619649} is an apocalyptic number.

It is an amenable number.

59881521619649 is a deficient number, since it is larger than the sum of its proper divisors (1).

59881521619649 is an equidigital number, since it uses as much as digits as its factorization.

59881521619649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 335923200, while the sum is 74.

The spelling of 59881521619649 in words is "fifty-nine trillion, eight hundred eighty-one billion, five hundred twenty-one million, six hundred nineteen thousand, six hundred forty-nine".