21053714412 has 24 divisors (see below), whose sum is σ = 49157631936. Its totient is φ = 7013290768.

The previous prime is 21053714377. The next prime is 21053714467. The reversal of 21053714412 is 21441735012.

It is a self number, because there is not a number n which added to its sum of digits gives 21053714412.

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, 557718 + ... + 594269.

It is an arithmetic number, because the mean of its divisors is an integer number (2048234664).

Almost surely, 2^21053714412 is an apocalyptic number.

It is an amenable number.

21053714412 is an abundant number, since it is smaller than the sum of its proper divisors (28103917524).

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

21053714412 is a wasteful number, since it uses less digits than its factorization.

21053714412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153517 (or 1153515 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The spelling of 21053714412 in words is "twenty-one billion, fifty-three million, seven hundred fourteen thousand, four hundred twelve".