30596404387721 has 2 divisors, whose sum is σ = 30596404387722. Its totient is φ = 30596404387720.

The previous prime is 30596404387621. The next prime is 30596404387723. The reversal of 30596404387721 is 12778340469503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30583996878400 + 12407509321 = 5530280^2 + 111389^2 .

It is a cyclic number.

It is not a de Polignac number, because 30596404387721 - 2³⁰ = 30595330645897 is a prime.

It is a super-2 number, since 2×30596404387721² (a number of 28 digits) contains 22 as substring.

Together with 30596404387723, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30596404387723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15298202193860 + 15298202193861.

It is an arithmetic number, because the mean of its divisors is an integer number (15298202193861).

It is a 1-persistent number, because it is pandigital, but 2⋅30596404387721 = 61192808775442 is not.

Almost surely, 2^{30596404387721} is an apocalyptic number.

It is an amenable number.

30596404387721 is a deficient number, since it is larger than the sum of its proper divisors (1).

30596404387721 is an equidigital number, since it uses as much as digits as its factorization.

30596404387721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 30596404387721 in words is "thirty trillion, five hundred ninety-six billion, four hundred four million, three hundred eighty-seven thousand, seven hundred twenty-one".