30553552121261 has 16 divisors (see below), whose sum is σ = 33799544064048. Its totient is φ = 27435809894400.

The previous prime is 30553552121251. The next prime is 30553552121347. The reversal of 30553552121261 is 16212125535503.

It can be written as a sum of positive squares in 8 ways, for example, as 306577045636 + 30246975075625 = 553694^2 + 5499725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30553552121261 is a prime.

It is a super-2 number, since 2×30553552121261² (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 (30553552121251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3506420 + ... + 8567501.

It is an arithmetic number, because the mean of its divisors is an integer number (2112471504003).

Almost surely, 2^{30553552121261} is an apocalyptic number.

It is an amenable number.

30553552121261 is a deficient number, since it is larger than the sum of its proper divisors (3245991942787).

30553552121261 is a wasteful number, since it uses less digits than its factorization.

30553552121261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12079232.

The product of its (nonzero) digits is 270000, while the sum is 41.

Adding to 30553552121261 its reverse (16212125535503), we get a palindrome (46765677656764).

The spelling of 30553552121261 in words is "thirty trillion, five hundred fifty-three billion, five hundred fifty-two million, one hundred twenty-one thousand, two hundred sixty-one".