21020461134192 has 240 divisors, whose sum is σ = 67317061619808. Its totient is φ = 6065860608000.

The previous prime is 21020461134143. The next prime is 21020461134227. The reversal of 21020461134192 is 29143116402012.

21020461134192 is a `hidden beast` number, since 2 + 1 + 0 + 2 + 0 + 4 + 611 + 34 + 1 + 9 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7839192 + ... + 10173192.

Almost surely, 2^{21020461134192} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21020461134192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33658530809904).

21020461134192 is an abundant number, since it is smaller than the sum of its proper divisors (46296600485616).

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

21020461134192 is a wasteful number, since it uses less digits than its factorization.

21020461134192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334328 (or 2334319 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 21020461134192 in words is "twenty-one trillion, twenty billion, four hundred sixty-one million, one hundred thirty-four thousand, one hundred ninety-two".