30442207675261 has 4 divisors (see below), whose sum is σ = 30610396668124. Its totient is φ = 30274018682400.

The previous prime is 30442207675249. The next prime is 30442207675283. The reversal of 30442207675261 is 16257670224403.

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 10377353532100 + 20064854143161 = 3221390^2 + 4479381^2 .

It is a cyclic number.

It is not a de Polignac number, because 30442207675261 - 2³¹ = 30440060191613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30442207675211) 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, 84094496160 + ... + 84094496521.

It is an arithmetic number, because the mean of its divisors is an integer number (7652599167031).

Almost surely, 2^{30442207675261} is an apocalyptic number.

It is an amenable number.

30442207675261 is a deficient number, since it is larger than the sum of its proper divisors (168188992863).

30442207675261 is a wasteful number, since it uses less digits than its factorization.

30442207675261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168188992862.

The product of its (nonzero) digits is 3386880, while the sum is 49.

Adding to 30442207675261 its reverse (16257670224403), we get a palindrome (46699877899664).

The spelling of 30442207675261 in words is "thirty trillion, four hundred forty-two billion, two hundred seven million, six hundred seventy-five thousand, two hundred sixty-one".