30401691655789 has 2 divisors, whose sum is σ = 30401691655790. Its totient is φ = 30401691655788.

The previous prime is 30401691655717. The next prime is 30401691655831. The reversal of 30401691655789 is 98755619610403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18868094562564 + 11533597093225 = 4343742^2 + 3396115^2 .

It is a cyclic number.

It is not a de Polignac number, because 30401691655789 - 2¹⁷ = 30401691524717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30401691655789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30401691655189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15200845827894 + 15200845827895.

It is an arithmetic number, because the mean of its divisors is an integer number (15200845827895).

Almost surely, 2^{30401691655789} is an apocalyptic number.

It is an amenable number.

30401691655789 is a deficient number, since it is larger than the sum of its proper divisors (1).

30401691655789 is an equidigital number, since it uses as much as digits as its factorization.

30401691655789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48988800, while the sum is 64.

The spelling of 30401691655789 in words is "thirty trillion, four hundred one billion, six hundred ninety-one million, six hundred fifty-five thousand, seven hundred eighty-nine".