30684127761556 has 12 divisors (see below), whose sum is σ = 56031885477792. Its totient is φ = 14675017625048.

The previous prime is 30684127761541. The next prime is 30684127761557. The reversal of 30684127761556 is 65516772148603.

It is a super-2 number, since 2×30684127761556² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30684127761494 and 30684127761503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30684127761557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166761563830 + ... + 166761564013.

It is an arithmetic number, because the mean of its divisors is an integer number (4669323789816).

Almost surely, 2^{30684127761556} is an apocalyptic number.

It is an amenable number.

30684127761556 is a deficient number, since it is larger than the sum of its proper divisors (25347757716236).

30684127761556 is a wasteful number, since it uses less digits than its factorization.

30684127761556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333523127870 (or 333523127868 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 61.

The spelling of 30684127761556 in words is "thirty trillion, six hundred eighty-four billion, one hundred twenty-seven million, seven hundred sixty-one thousand, five hundred fifty-six".