21160646254412 has 24 divisors (see below), whose sum is σ = 42373605647520. Its totient is φ = 9057638436480.

The previous prime is 21160646254381. The next prime is 21160646254441. The reversal of 21160646254412 is 21445264606112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467058539 + ... + 467103842.

It is an arithmetic number, because the mean of its divisors is an integer number (1765566901980).

Almost surely, 2^{21160646254412} is an apocalyptic number.

It is an amenable number.

21160646254412 is an abundant number, since it is smaller than the sum of its proper divisors (21212959393108).

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

21160646254412 is a wasteful number, since it uses less digits than its factorization.

21160646254412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934163201 (or 934163199 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 21160646254412 in words is "twenty-one trillion, one hundred sixty billion, six hundred forty-six million, two hundred fifty-four thousand, four hundred twelve".