30426641335021 has 4 divisors (see below), whose sum is σ = 30474108794844. Its totient is φ = 30379173875200.

The previous prime is 30426641334919. The next prime is 30426641335091. The reversal of 30426641335021 is 12053314662403.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16887258766921 + 13539382568100 = 4109411^2 + 3679590^2 .

It is a cyclic number.

It is not a de Polignac number, because 30426641335021 - 2²⁵ = 30426607780589 is a prime.

It is a super-2 number, since 2×30426641335021² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30426641335091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23733728950 + ... + 23733730231.

It is an arithmetic number, because the mean of its divisors is an integer number (7618527198711).

Almost surely, 2^{30426641335021} is an apocalyptic number.

It is an amenable number.

30426641335021 is a deficient number, since it is larger than the sum of its proper divisors (47467459823).

30426641335021 is an equidigital number, since it uses as much as digits as its factorization.

30426641335021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47467459822.

The product of its (nonzero) digits is 311040, while the sum is 40.

Adding to 30426641335021 its reverse (12053314662403), we get a palindrome (42479955997424).

The spelling of 30426641335021 in words is "thirty trillion, four hundred twenty-six billion, six hundred forty-one million, three hundred thirty-five thousand, twenty-one".