21106046551374 has 48 divisors (see below), whose sum is σ = 46704103917120. Its totient is φ = 6885459679680.

The previous prime is 21106046551283. The next prime is 21106046551391. The reversal of 21106046551374 is 47315564060112.

It is a happy number.

21106046551374 is a `hidden beast` number, since 2 + 1 + 1 + 0 + 6 + 0 + 4 + 65 + 513 + 74 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30161692 + ... + 30853520.

It is an arithmetic number, because the mean of its divisors is an integer number (973002164940).

Almost surely, 2^{21106046551374} is an apocalyptic number.

21106046551374 is an abundant number, since it is smaller than the sum of its proper divisors (25598057365746).

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

21106046551374 is a wasteful number, since it uses less digits than its factorization.

21106046551374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727945 (or 727942 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 21106046551374 in words is "twenty-one trillion, one hundred six billion, forty-six million, five hundred fifty-one thousand, three hundred seventy-four".