58487678521 has 2 divisors, whose sum is σ = 58487678522. Its totient is φ = 58487678520.

The previous prime is 58487678437. The next prime is 58487678533. The reversal of 58487678521 is 12587678485.

It is a happy number.

58487678521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37581699600 + 20905978921 = 193860^2 + 144589^2 .

It is a cyclic number.

It is not a de Polignac number, because 58487678521 - 2²¹ = 58485581369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 58487678521.

It is not a weakly prime, because it can be changed into another prime (58487678551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29243839260 + 29243839261.

It is an arithmetic number, because the mean of its divisors is an integer number (29243839261).

Almost surely, 2^58487678521 is an apocalyptic number.

It is an amenable number.

58487678521 is a deficient number, since it is larger than the sum of its proper divisors (1).

58487678521 is an equidigital number, since it uses as much as digits as its factorization.

58487678521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30105600, while the sum is 61.

The spelling of 58487678521 in words is "fifty-eight billion, four hundred eighty-seven million, six hundred seventy-eight thousand, five hundred twenty-one".