30400264261 has 2 divisors, whose sum is σ = 30400264262. Its totient is φ = 30400264260.

The previous prime is 30400264259. The next prime is 30400264273. The reversal of 30400264261 is 16246200403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23343256225 + 7057008036 = 152785^2 + 84006^2 .

It is a cyclic number.

It is not a de Polignac number, because 30400264261 - 2¹ = 30400264259 is a prime.

It is a super-2 number, since 2×30400264261² (a number of 22 digits) contains 22 as substring.

Together with 30400264259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30400264201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15200132130 + 15200132131.

It is an arithmetic number, because the mean of its divisors is an integer number (15200132131).

Almost surely, 2^30400264261 is an apocalyptic number.

It is an amenable number.

30400264261 is a deficient number, since it is larger than the sum of its proper divisors (1).

30400264261 is an equidigital number, since it uses as much as digits as its factorization.

30400264261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 30400264261 its reverse (16246200403), we get a palindrome (46646464664).

The spelling of 30400264261 in words is "thirty billion, four hundred million, two hundred sixty-four thousand, two hundred sixty-one".