30556421124981 has 16 divisors (see below), whose sum is σ = 42119168207424. Its totient is φ = 19692078626304.

The previous prime is 30556421124967. The next prime is 30556421124989. The reversal of 30556421124981 is 18942112465503.

It is not a de Polignac number, because 30556421124981 - 2⁹ = 30556421124469 is a prime.

It is a super-2 number, since 2×30556421124981² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30556421124989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1220974506 + ... + 1220999531.

It is an arithmetic number, because the mean of its divisors is an integer number (2632448012964).

Almost surely, 2^{30556421124981} is an apocalyptic number.

It is an amenable number.

30556421124981 is a deficient number, since it is larger than the sum of its proper divisors (11562747082443).

30556421124981 is a wasteful number, since it uses less digits than its factorization.

30556421124981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441974180.

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 30556421124981 in words is "thirty trillion, five hundred fifty-six billion, four hundred twenty-one million, one hundred twenty-four thousand, nine hundred eighty-one".