30666671511644 has 24 divisors (see below), whose sum is σ = 63448285887840. Its totient is φ = 12689657176896.

The previous prime is 30666671511629. The next prime is 30666671511647. The reversal of 30666671511644 is 44611517666603.

It is a self number, because there is not a number n which added to its sum of digits gives 30666671511644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30666671511647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18883417607 + ... + 18883419230.

It is an arithmetic number, because the mean of its divisors is an integer number (2643678578660).

Almost surely, 2^{30666671511644} is an apocalyptic number.

It is an amenable number.

30666671511644 is an abundant number, since it is smaller than the sum of its proper divisors (32781614376196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30666671511644 is a wasteful number, since it uses less digits than its factorization.

30666671511644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37766836877 (or 37766836875 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 30666671511644 in words is "thirty trillion, six hundred sixty-six billion, six hundred seventy-one million, five hundred eleven thousand, six hundred forty-four".