21602425771042 has 8 divisors (see below), whose sum is σ = 32860027933632. Its totient is φ = 10649083126500.

The previous prime is 21602425771039. The next prime is 21602425771067. The reversal of 21602425771042 is 24017752420612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21602425771042.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76064879334 + ... + 76064879617.

It is an arithmetic number, because the mean of its divisors is an integer number (4107503491704).

Almost surely, 2^{21602425771042} is an apocalyptic number.

21602425771042 is a deficient number, since it is larger than the sum of its proper divisors (11257602162590).

21602425771042 is a wasteful number, since it uses less digits than its factorization.

21602425771042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152129759024.

The product of its (nonzero) digits is 376320, while the sum is 43.

The spelling of 21602425771042 in words is "twenty-one trillion, six hundred two billion, four hundred twenty-five million, seven hundred seventy-one thousand, forty-two".