58861878661 has 2 divisors, whose sum is σ = 58861878662. Its totient is φ = 58861878660.

The previous prime is 58861878643. The next prime is 58861878679. The reversal of 58861878661 is 16687816885.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (58861878643) and next prime (58861878679).

It can be written as a sum of positive squares in only one way, i.e., 55899144900 + 2962733761 = 236430^2 + 54431^2 .

It is a cyclic number.

It is not a de Polignac number, because 58861878661 - 2⁹ = 58861878149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 58861878593 and 58861878602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (58861878601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29430939330 + 29430939331.

It is an arithmetic number, because the mean of its divisors is an integer number (29430939331).

Almost surely, 2^58861878661 is an apocalyptic number.

It is an amenable number.

58861878661 is a deficient number, since it is larger than the sum of its proper divisors (1).

58861878661 is an equidigital number, since it uses as much as digits as its factorization.

58861878661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30965760, while the sum is 64.

The spelling of 58861878661 in words is "fifty-eight billion, eight hundred sixty-one million, eight hundred seventy-eight thousand, six hundred sixty-one".