30012452421555 has 16 divisors (see below), whose sum is σ = 48020041107360. Its totient is φ = 16006602213888.

The previous prime is 30012452421521. The next prime is 30012452421619. The reversal of 30012452421555 is 55512425421003.

It is not a de Polignac number, because 30012452421555 - 2¹⁴ = 30012452405171 is a prime.

It is a super-2 number, since 2×30012452421555² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4552939 + ... + 8986331.

It is an arithmetic number, because the mean of its divisors is an integer number (3001252569210).

Almost surely, 2^{30012452421555} is an apocalyptic number.

30012452421555 is a deficient number, since it is larger than the sum of its proper divisors (18007588685805).

30012452421555 is a wasteful number, since it uses less digits than its factorization.

30012452421555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4884710.

The product of its (nonzero) digits is 240000, while the sum is 39.

Adding to 30012452421555 its reverse (55512425421003), we get a palindrome (85524877842558).

The spelling of 30012452421555 in words is "thirty trillion, twelve billion, four hundred fifty-two million, four hundred twenty-one thousand, five hundred fifty-five".